{
  "manageEntity": {
    "action": "Save",
    "entityId": "868066",
    "entityType": "Track",
    "nonce": "0x3261e235f506dfef573788aec5bc7db42f1720bb626f9d8bc47059767497470b",
    "signature": "0x61a863ab9328e01eeee402c882eae9bf098e0f224358cf3d4e89e8519d15b69d676ecf156f15a1c8de975c0504f713995e81ec1341550d8c2ab9ff93f37deb2a1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}