{
  "manageEntity": {
    "action": "Create",
    "entityId": "841133645",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":52309,\"entity_id\":563418240,\"body\":\"love love love\",\"track_timestamp_s\":47}}",
    "nonce": "0x2bb402ddd624a938e1bbbf9038439e4ef410a5bb3d8aaaf0cffe8844c59d3d4c",
    "signature": "0x2abddfc5714192140865d2fbf3533ec68a9cccedbfdf631c700da71a7dcd55052cbd43d60a0b1050572fee6390a5d04cbdddbace1bbdc023e094ce4a8170fd3f1c",
    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "52309"
  }
}