{
  "manageEntity": {
    "action": "Create",
    "entityId": "884192655",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":20,\"entity_id\":595328108,\"body\":\"sooooo smoove\",\"track_timestamp_s\":46}}",
    "nonce": "0x7109d5267651ac98670b963fb55269d181fd35ea9d0773c5b866ee58993f7abb",
    "signature": "0xb7adfa9751f1aed6a1c2dd070ba4ccbc26df41df04ed47d7d998994e26a3c1a64630ab81db91adf641f14d1f06c697d023c8234c7cfad45fa876cd974aca00fd1c",
    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "20"
  }
}