{
  "manageEntity": {
    "action": "Save",
    "entityId": "29154083",
    "entityType": "Track",
    "nonce": "0xad932e20de773257ef264d89d0595c0eee8ca4811f54903126b3586bd9369b29",
    "signature": "0x1499ee8a7e12c7669f1c4980bf9b947c7455909c0e1d8a0aec5f7497a0bcb4826b0e8cbd1812b9cd654af5617a5b30dddabf436ea96bb0365d754f933ae9f0bb1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}