{
  "manageEntity": {
    "action": "Create",
    "entityId": "712249690",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"mesmerizing\",\"entity_id\":889277057,\"track_timestamp_s\":125}}",
    "nonce": "0x2d1593f49f9f51482b29839cfcf8c5815caef46928448928cbf52ed16a6fb701",
    "signature": "0x44d18edd6aa21aa8f699570b283d77bc77bbef6e8e5e587ef8c192695a797f0e39840d11bd5688dcbfba9187e9dc4db800806901b4fd88478eacc08f120945691c",
    "signer": "0x7D273271690538cF855E5b3002A0dD8c154bB060",
    "userId": "1"
  }
}