{
  "manageEntity": {
    "action": "Save",
    "entityId": "9275083",
    "entityType": "Track",
    "nonce": "0xad133a5c12fb5de1058ce4c5c175594d34fe344d9de78250de9267552126d0e6",
    "signature": "0xa4ed63714ccf86aa0f318ccdc51204756b87b213f3feedfef9f3e3eca73ee7a43dde43d4d01aec38a129a30f44b4c852c3abbdf83353670d1fe00a4d7cfd1b4c1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}