{
  "manageEntity": {
    "action": "Save",
    "entityId": "798710728",
    "entityType": "Track",
    "nonce": "0xd30e5f5ecc95e9bd6a48f285f0e7436cd5cf561d49ba7c56b204a4e0879c8e72",
    "signature": "0xa1d126548740a500c685608083d25a78b016eb120a0c4cfb4ed6f121f3b9847b6f1ef6c304758821bbe4e90b8cb28758db1e48a47bcf212d3dfdc42b0e3095411b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}