{
  "manageEntity": {
    "action": "Save",
    "entityId": "1013651269",
    "entityType": "Track",
    "nonce": "0x3aa5807084961518af36566a25b29309e4aacf6e19e2d0da59e71ef51b4fd5b2",
    "signature": "0x3382c0d75f5550ad37b5bebfcea3420ef197c12e3446c84f202678207abeebc81a882dd7cd81efef88cf5bb945511f4c72e64ba39ef67aa4c9646f1ce9b5f4cb1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}