{
  "manageEntity": {
    "action": "Save",
    "entityId": "2080075813",
    "entityType": "Track",
    "nonce": "0x0caaea2afff039c6cea6708a962457bd81b7aeb6dd2818dac193ab2c95fdca89",
    "signature": "0x4cc3db6413ceef8a69fa74e0be7ff786b9e96a8749ef360874bc286a8540fa8414b0c8ab4be35ef3d229b4307d4fccb7f86abfa83b4a9e34e38809824cba552f1b",
    "signer": "0x4810fE66B3A42DA4cb34b622aD9A069C293c6b86",
    "userId": "445042807"
  }
}