{
  "manageEntity": {
    "action": "Create",
    "entityId": "2102964738",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":52309,\"entity_id\":981701176,\"body\":\"yeahhhh!!\",\"track_timestamp_s\":67}}",
    "nonce": "0xb41bc81debe2acc7a03e42b32e72255aba16a59400be70b8698063d2782b5dd2",
    "signature": "0xd0bc1dbd8b5dee094c1638fbbe4e959801813f73738052a5a897c51e279f53e00f1043c6cf6d1fa2b6f878c7442c5ff87c6d17f462925bf17bddec3095de06381b",
    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "52309"
  }
}