{
  "manageEntity": {
    "action": "Save",
    "entityId": "181536",
    "entityType": "Track",
    "nonce": "0x07bee0b946b2a70014315360d21ce10db5dd8cf62ae5b48e3fce3c1ce856fecb",
    "signature": "0x72ef7beb0c3594b561663ed3e8f2589e7bc5d6493c78608298285acb71ee552f1ab6d5d75c91de3297ba6f4cb11b9e5e2c066107ff8baa687641af7ad4e061951c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}