{
  "manageEntity": {
    "action": "Update",
    "entityId": "500808067",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x58ffc260f94146dc766a72dd3f021a0952fb4fd993e6dd06f0cabd4d1c9cc13b",
    "signature": "0xa77d702cb45327d986fd94c3ed50e6d784910ed1c270389d5ccf4a1ec667336d53bb2c7f3ad246fa5ab3541322bd75e0df6195b485827b621ffb0d6a7aeb4db51c",
    "signer": "0xea4A1e6594787128557AbE5E2C672413b28f907A",
    "userId": "500808067"
  }
}