{
  "manageEntity": {
    "action": "Save",
    "entityId": "1869686833",
    "entityType": "Track",
    "nonce": "0xc9e30a37dc0cdfe4a94d7acb16163945e97eceafa5f1609f5ec90064d279e6f5",
    "signature": "0xc27124a8a074b6b5786f7ebf07c50043d19c3f04926f9c31562ce3ad169b46214dbb4debba16e9913d37ff915a9924bbe2adcadc6ac2242eafe9d11f318440311b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}