{
  "manageEntity": {
    "action": "Save",
    "entityId": "1060356",
    "entityType": "Track",
    "nonce": "0x573e525bc69c29e8aa61f52b47e46931b0e494be7e92f4555f7be9b69698f366",
    "signature": "0x5b1c197c2acab655183a1e980afef1359e54dcab91d215fa8c1e433c801a4912636247c0d4223fb0d79ab2ebb0cfe9e146977f9366539c93688ab6bcfb65b5ea1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}