{
  "manageEntity": {
    "action": "Save",
    "entityId": "60760184",
    "entityType": "Track",
    "nonce": "0x9e6752aaeb4d54a6914ae00b965a543f487cf71569d20f92f1586ec9cad1cdd5",
    "signature": "0x7be52d7631884de1b82297ad6b7060e3667a04f96b1bb169ba556b20dae4fd6e29ea011b6e4479a7167e8625d559033e976dc24ae3a9f4565f84235deb4fb0691b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}