{
  "manageEntity": {
    "action": "Save",
    "entityId": "1959972282",
    "entityType": "Track",
    "nonce": "0x5eb2f4da6f7516e0f4cc37544352fd19c1a41c0fb2a7b47d60e661b3893dd161",
    "signature": "0xfdddeee5ebc65b46ae6b862c7d972fb72eb5ca489d04ea18a8ba908226185f92749cf7a4a14dda63bb4a6e72c4a00f198e8fe5974d481e7cfc75d18a4208454c1c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}