{
  "manageEntity": {
    "action": "Save",
    "entityId": "1761735265",
    "entityType": "Track",
    "nonce": "0x7b3c22af8e2785880d0a68d9937246c5445fd02a9204be04eb0859980ee9cdb2",
    "signature": "0x6380be40950b1a06438e3c497094b1df335ef73a3048715d142e26000a61c44c78808799425ea480994663a8e5210606643f3b09a80ceedd10d7d235c1951cbc1b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}