{
  "manageEntity": {
    "action": "Update",
    "entityId": "356383741",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xea240abe6d8d425e87afb3a44d7d92c548f8fc4f527833a50db5c58e6c9e4076",
    "signature": "0x4a033ea13890666188cadf6eff70acfe6023b8a51110ff73718ceb428e9d0eb919d924e60ee1bd46d8df52aaf1a5f6ffb456e90b6d7136d416574b27261a24b61b",
    "signer": "0xd810255aC9c07117E0a020D66Ef18A7f8E6E91d9",
    "userId": "356383741"
  }
}