{
  "manageEntity": {
    "action": "Create",
    "entityId": "2107731970",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":52309,\"entity_id\":1752058689,\"body\":\"sick!\",\"track_timestamp_s\":49}}",
    "nonce": "0x6fa185bd62e808ef0669d8dd8f03caa3850acf84ef76b24b630f1b7ee67f658f",
    "signature": "0x33d7e5d18cbd24513f12be5a656c4170e87408f96a11c91e8f35a85f5ae57a695193ce5e18cca0fcba51b75ee8b581f05e47882a4f3447ce5bdb207098b2f8a71c",
    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "52309"
  }
}