{
  "manageEntity": {
    "action": "Update",
    "entityId": "766053366",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa483b74511ac150f4c54e6440436691460959ab01e5c2a4796c7d8947f461ce4",
    "signature": "0x12276feb5892d4f7b5f66ea071770cfb97ba4a7e2e340480e415ffa1ed5292ed2182047305c498fb489af38d115c15d09181e91154708629bf5cbf7e8cca78d81c",
    "signer": "0xE0B1Cd7F7124071739f50a64A1Fa3E5EE57a7108",
    "userId": "766053366"
  }
}