{
  "manageEntity": {
    "action": "Update",
    "entityId": "648804463",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x54da669da6e0052643e07d2bc58f934f0079eac83c38d6cbedb9c89756bb726b",
    "signature": "0xa80f22ffd71088be5eccce7cd0c147bda75a3995bed9ddbbc78ae7b3d5eec1742fa49c6ec297f37cef53d70e4bc576d19405f48dcd6bd5037093a144d559119f1b",
    "signer": "0x085D08458f054e7c6257687faFA2bEA71E5B61F6",
    "userId": "648804463"
  }
}