{
  "manageEntity": {
    "action": "Save",
    "entityId": "252575",
    "entityType": "Track",
    "nonce": "0xdbdb7dbb1a5c97e762be97874165b3beb35a6fef699097cd9b29e1aecae1e9bb",
    "signature": "0xd1da5a2a667fd4a72f27110e2ba465707b8941689b553fc8b1a22d19055bb206112a0001818bb386217871dcc5c64a953b3960a8d2be5efaa112152335aec6c11c",
    "signer": "0x06dA33EaAD70aAB87Ed4bb3065F4A7610d00088a",
    "userId": "270016"
  }
}