Upload an user to Keycloak using CURL

function createUserKeycloak() {
    echo "************************************"
    echo " Create Keycloak user"
    echo "************************************"
    # Set the needed parameter for the authorization
    USER=admin
    PASSWORD=admin
    GRANT_TYPE=password
    CLIENT_ID=admin-cli
    # Set the needed parameter for configuration of the import
    TENANT_B=tenantB
    USERDATA=cns-tenantB-user.json
    # Execute the CURL command to request the access-token
    access_token=$( curl -d "client_id=$CLIENT_ID" -d "username=$USER" -d "password=$PASSWORD" -d "grant_type=$GRANT_TYPE" "$KEYCLOAK_URL/auth/realms/master/protocol/openid-connect/token" | sed -n 's|.*"access_token":"\([^"]*\)".*|\1|p')
    echo "User : $USER/$PASSWORD" 
    echo "Access token : $access_token"
    # Execute the CURL command to upload the user
    result=$(curl -d @./$USERDATA -H "Content-Type: application/json" -H "Authorization: bearer $access_token" "$KEYCLOAK_URL/auth/admin/realms/$TENANT_B/users")
    # Verify upload
    if [ "$result" = "" ]; then
    echo "------------------------------------------------------------------------"
    echo "The user is created."
    echo "Open following link in your browser:"
    echo "$KEYCLOAK_URL/auth/admin/master/console/#/realms/$TENANT_A"
    echo "------------------------------------------------------------------------"
    else
    echo "------------------------------------------------------------------------"
    echo "It seems there is a problem with the user creation: $result"
    echo "------------------------------------------------------------------------"
    fi
}

{"firstName":"alice",
 "lastName":"alice", 
 "email":"alice@blog.com", 
 "enabled":"true", 
 "credentials": [ {
    "type" : "password",
    "hashedSaltedValue" : "A3okqV2T/ybXTVEgKfosoSjP8Yc9IZbFP/SY4cEd6hag7TABQrQ6nUSuwagGt96l8cw1DTijO75PqX6uiTXMzw==",
    "salt" : "sl4mXx6T9FypPH/s9TngfQ==",
    "hashIterations" : 27500,
    "counter" : 0,
    "algorithm" : "pbkdf2-sha256",
    "digits" : 0,
    "period" : 0,
    "createdDate" : 1554245879116,
    "config" : { }
  } ],
 "username":"alice"}