{
  "manageEntity": {
    "action": "Save",
    "entityId": "762167664",
    "entityType": "Track",
    "nonce": "0xe93cbe39428a8099e12390337352afaa77198d7511314cf191d3f5316d9cf63d",
    "signature": "0xc40187d49d43d1cdf7725dbca9d694b1371f27173cb4d06d2ea50e0f9a6443435e8a1e53743644c4a374c1330d88e2452403915304e27fd28dde5672ff0b23481b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}