{
  "manageEntity": {
    "action": "Create",
    "entityId": "1845444836",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Solid track, welldone \",\"entity_id\":1234912088,\"track_timestamp_s\":7}}",
    "nonce": "0xd767ba8d90c1867373434b534c7a52188e8587480d63c9986318d314a63e3f3f",
    "signature": "0xcf525ead82c397e9c8d696e7758fd9cff6c9e9fea83a4e9a31725c844da2cd8d2e4cdc378a65f8e4224be91a34c2f2b9310eb83688543ebc4d4e5c9ee6c3411b1c",
    "signer": "0xD0f51E232A92DDc965FB1FE51d04200D15d10fc1",
    "userId": "536634479"
  }
}