{
  "manageEntity": {
    "action": "Save",
    "entityId": "1794501153",
    "entityType": "Track",
    "nonce": "0xb2b33def7980e8be051e4e00433f34bac8cd4992699bc38505dea5d5b84d203a",
    "signature": "0xd390abddf989bcff3a3b8db89b2e09331ae7ebe92bb4307c8a20f35c4e847e283f4db8df41605d6fce9f4b2964c5bf38e0fab7ca40316ea6bec562d61e0e081d1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}