{
  "manageEntity": {
    "action": "Save",
    "entityId": "797508737",
    "entityType": "Track",
    "nonce": "0x3107d64feb054e87f775ac236d29ddc91c957526c612e611679f9fc4335d4679",
    "signature": "0x2e864cbd1bf9ab5ce61a7cc671e420d99d77a1b4a2c42a4828bbc524429f1dc662cdd8216206a50cfaf7ef0b2a3e639dbd0d2578f79858ac8b065afd781042a71b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}