{
  "manageEntity": {
    "action": "Save",
    "entityId": "1624822539",
    "entityType": "Track",
    "nonce": "0x8d477b18892231a205f76999f874a327e4a16fda0f7d94a77546be88da36fbe4",
    "signature": "0x79a8eca1da7e2315d4191a91fb797be947c801aec68f3dd99f82c9c28679f3cf38afbc60742ff3afad0b8f62fa454d9d4ec5cb76bed0dcc448499727b294613e1b",
    "signer": "0x5D012C880480A2E1ab4345f6F374CFf73e040331",
    "userId": "10449019"
  }
}