{
  "manageEntity": {
    "action": "Update",
    "entityId": "423416308",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x910e17b8f91842187e077a6ab85f5dd25abc9dcbec6be93a741b283a46977f60",
    "signature": "0x8058ab0907fcdd49c1b1dc89c7bc8c30c7f5cb6b9cd0bd159da0acd57eb415f9791455933700d28a52d9a5b5b057065a6c3f147bd6948a4e285feb53356be11c1b",
    "signer": "0x764971D2fD130Ad6faE1AafEF803bAe01405680c",
    "userId": "423416308"
  }
}