{
  "manageEntity": {
    "action": "Update",
    "entityId": "54971934",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x790fe6519c9e9ea3a966bcdaf842cc5329b341967fe17a794a95eb01a35e80a0",
    "signature": "0xb73d3b6327bf5ca47f1738cb0eb3f5cc3bf2cf8ca79f81271b917c1cc4714e7c533ccc88eacfe31bc30eea5e684f76e3b321d9c1ffbb18c4b0348f97164e78531b",
    "signer": "0x7DC9c937C6e7B95DbC6b6133B15fE1B093e8F7ce",
    "userId": "54971934"
  }
}