{
  "manageEntity": {
    "action": "Save",
    "entityId": "846212961",
    "entityType": "Track",
    "nonce": "0xc5dab0443d9f77025d0991d2a9d71823ba2dfa22e8f25750cd8488daa88f51a0",
    "signature": "0x9513c74bb66d79929d0b114393d523f98a112a71e3a247636f5ebd5b6707b23d205940442aaf6f48cd75bd717ed2754bfe16a3cc20eee817f27344dfb0b4b94b1b",
    "signer": "0x5A6DCd6E22135e4225594900c17114A7dAD01964",
    "userId": "580576096"
  }
}