{
  "manageEntity": {
    "action": "Create",
    "entityId": "594258209",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Inbox me \",\"entity_id\":188602829,\"track_timestamp_s\":4}}",
    "nonce": "0x2b76fd69561ac3ad8abd91957f37c677bc59911c27236f487f1e372ae5929fc4",
    "signature": "0xc59b3b772437da5ae9cc0fc19cfb0af2b0b98266c1c46b21ba33804b29c211e0266d544052ac5eddf7210211955430f71ceddb718ad4f179e3358c4c25bfea761b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}