{
  "manageEntity": {
    "action": "Create",
    "entityId": "1849246100",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":20,\"entity_id\":1171021155,\"body\":\"hooked\",\"track_timestamp_s\":56}}",
    "nonce": "0x2eaa6a31073128e8b9ec5fb1255f8e8c59c6aa8fb9e196a45f96552c756ea975",
    "signature": "0x085474905c5216695c4206e36689307c78f16cb72dd5200911e3bc8347c6789856309a7d3bb9835196cac000bb55b69a3b0072039c972b4b00da5458d7d0b4951b",
    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "20"
  }
}