{
  "manageEntity": {
    "action": "Save",
    "entityId": "119411214",
    "entityType": "Track",
    "nonce": "0xc2aec46f9427fcfc2705ebb7931ab35eed8722665a0fbb4feb8cec8c0520fea4",
    "signature": "0xeb8523f5c216ecf6d59e367a88951d7263e8c3149045f23137783e19255988934d5dc993626c10ffad0742ed6c5b01249d204e42aede47fba4fde9be68e0b73d1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}