{
  "manageEntity": {
    "action": "Update",
    "entityId": "946443800",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcc877239c10a13c1156960021d1bb3578861f99405cac6217eec0dfd17f299d9",
    "signature": "0x368f963d6ada684cf88cb230788f9e711a495b368035c5db792c2d987a24c86e3ce7a923ff0408b616a4e3bdb85b2a36bf01a7cfddc666f41e3c96143395fbc01b",
    "signer": "0xeB77b6E9cC52B8892717c003d884EBe11D8fBab2",
    "userId": "946443800"
  }
}