{
  "manageEntity": {
    "action": "Save",
    "entityId": "212261402",
    "entityType": "Track",
    "nonce": "0x36b7b7679ca528f6adfa6f148bc0e6ac842a1b784090af5fd336059ed6e61462",
    "signature": "0x29f92ff3af43a0a88a2bd67378a3c08d783db64532fc2977ad9c5136a300d23d08fdea1cd645960bb4aacc5958f39bfd5ca945cc28680c24eefb5a07a35bb8291c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}