{
  "manageEntity": {
    "action": "Update",
    "entityId": "878751743",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdc15ffa9dc8bdaabc493ce970461b5faca81ddeaf11b6294d4d0f439a9196127",
    "signature": "0x7e84903d96d42d1ee3a878e7e525cf777f118aa339e99b26bbcfdba32f133c9056802e87fa5525597e3831df89a5dcec5b94229af72a8f7a87894e391dfd5df51b",
    "signer": "0x05Fa14948e5d52c3ed23534257EA9AbB5C503f73",
    "userId": "878751743"
  }
}