{
  "manageEntity": {
    "action": "Update",
    "entityId": "405788067",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x16ea10304de952227fa8d826137fcd3e15eef599c0df4c47b0432012525041d4",
    "signature": "0x9dc790f8a3ddb872f176ae6b3aa694f1a9a2c317062503f738f952d95aeeec4072a2eebdcb2912323e4ad3b9a367174918f168aead0074dc63aa71b0e9d608de1c",
    "signer": "0xFef4Dd9023A7Fbad11746cd9e05B5dbc92a4B3Ae",
    "userId": "405788067"
  }
}