{
  "manageEntity": {
    "action": "Save",
    "entityId": "1673717792",
    "entityType": "Track",
    "nonce": "0x9b899d08eb9586abb8a3e24c278c1483fa427d1a2cd2ad2aea897bd184876f90",
    "signature": "0xc98a29bec0939fbe31961f72ad9d9848e755496d47d7b5ab899ec764a5fa03a9246b55e4ca546a55164f94e001d1d0ee83ee4fdebe14bdfda4a0fc26e92e7fd51b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}