{
  "manageEntity": {
    "action": "Save",
    "entityId": "1312532880",
    "entityType": "Track",
    "nonce": "0x9073ff6542aa347f1da9246ba4b590eb2ec8392717727f4867680668285c3283",
    "signature": "0x728618710498c5a6126055eaeaf51bb72c3923a1bbc8eb7495368c46bdeeb0016dd17cb8faf6c2fcff28c4c277120c43cf25241868aebd3f2115e2017e53456a1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}