{
  "manageEntity": {
    "action": "Save",
    "entityId": "2096444483",
    "entityType": "Track",
    "nonce": "0x1fdb3f0bd2b852196f53f316b9800ca74fd3c64c2a3935e26b1162a8a12dd77b",
    "signature": "0x702326941b558bc82be54777075a65dcc5901442d7988292bc889c82c370a55b3c1e9c27ca6d3a3211c1992989c63589a4186e0b8fd26aa7aa81fa3a35a63f8e1c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}