{
  "manageEntity": {
    "action": "Update",
    "entityId": "16063324",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x84709a21d54dc0241a28dd20042e5fb317e1e0ea119c3db030cb6c79a9e020f1",
    "signature": "0x2080731b76d7094607a9e2e1909097dce589ba2ef0c98145be46754de56514541ea9b5414f812cb3e6b878d099252853b2e07f8825c231653cc97e03b903831e1b",
    "signer": "0xf01B5B8eF822B487cCBd5f49e5e66620376126c5",
    "userId": "16063324"
  }
}