{
  "manageEntity": {
    "action": "Create",
    "entityId": "2014329267",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Good\",\"entity_id\":698863101,\"track_timestamp_s\":42}}",
    "nonce": "0xf0dc4f50cf4a39e807f49f573f988455b8af45aecd31086cfd8d77f563bd4cb3",
    "signature": "0x32dfc0d482568fe121d0cd15f9bc04e0602872b75df67fdb91cbff59ed3296225eecc9908818b6b63ff12ca381cc2e1f1879a4edb5a3619d49003d073ba942741c",
    "signer": "0x9ca9205Cbe9f6A668E1bABC428D0A55c22E73e38",
    "userId": "358372643"
  }
}