{
  "manageEntity": {
    "action": "Save",
    "entityId": "1004916",
    "entityType": "Track",
    "nonce": "0xd4e1248d52e1c46d9655350033e48073a6ad615bbe0753aeb3ecdfbe4d931a58",
    "signature": "0x67257b9d8eaf0d70e0066564e5a2d1114a3cc3bc43e8f0cfd8510cab7b9655957443d1d11e69eac63937712eb10974621cba6205aeab05471f157fa4e63f62d61b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}