{
  "manageEntity": {
    "action": "Save",
    "entityId": "1365397489",
    "entityType": "Track",
    "nonce": "0x854b0720438a0d464e484d2590c3ba7099bc6b3a34952c31c116176f0bc7b29d",
    "signature": "0xeaded1e4d8822eb6c2e04149f943e264457f404d06917c922b6d83292e87dac3786cc63d12e2e5e8427804950c9a31cf549ae2119c6f0d27e152ada16502998d1b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}