{
  "manageEntity": {
    "action": "Save",
    "entityId": "62393",
    "entityType": "Track",
    "nonce": "0x42e75af9db4811d9333533288e998bc792188340ba2dae7341f41c06d3e023d6",
    "signature": "0x3c750a354a184446e9af00e6d76e3d852fb7b704c7fbde1171fba563967da89d655f6f9fa1dd6f90a463da4ef78b1baffdcaa50342c721ff9c9dd056d88a5cd51b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}