{
  "manageEntity": {
    "action": "Update",
    "entityId": "304150418",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0c8977f3ac665491c63c61989a2b04d4027cb25978dbecd983fbfabd991a9d44",
    "signature": "0x8a00fa8fcfa3e05015e349eec2e4cbd83d68ec2515c503c546e1438cb1fb756e3f2117bac8765c0c0ab80f9429aa2021026aaed5cd33fd956f528917bf868ab31b",
    "signer": "0x1274d09Cfe101b82608f27b46d9b7D97BdA8D555",
    "userId": "304150418"
  }
}