{
  "manageEntity": {
    "action": "Save",
    "entityId": "1797388967",
    "entityType": "Track",
    "nonce": "0x341316e77d6d5828ecec35353b4dac22bff025ecc51f7835160d7c2fe41d6651",
    "signature": "0x365d378bf86d71fa534b467ef19f7c0dc0a8cd91869170b2a1fc487011adc9d77e69dc9e3f962fa54a1c39f94d1d980eea54ccb7edecb58c8d713f21534c75b71c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}