{
  "manageEntity": {
    "action": "Update",
    "entityId": "554920508",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2f3c6b4c9cd41b8ef39dc8aa076dfe0c653025c1c490f5cbbc9ba298d13640aa",
    "signature": "0x95baf47ceeeda9ab70a61550583740b51489513c1d51c8a1c8526bcc01ca254f65de8dfc0c1baf4f6461256694f34a71e58723630108b4b283ac6bff8b965c691c",
    "signer": "0x989faEfE658E0b6dF1793197b0De4137Cb1aDD3b",
    "userId": "554920508"
  }
}