{
  "manageEntity": {
    "action": "Update",
    "entityId": "904988167",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x0bde7d7818e7da97160f73aeb6fbf9ac5a537f5cc3167128fd7ec320e7a787fc",
    "signature": "0x21c0611ee9d37af7bda5da111ee03a639568959a07c42f047e261636ebce0d035af34c05520217a0cf862e5b2f622900888892a2d8413beac6914e9512abba061c",
    "signer": "0xF1c5D51EaC4C85B878E6c745686969726F6AC602",
    "userId": "904988167"
  }
}