{
  "manageEntity": {
    "action": "Save",
    "entityId": "361238",
    "entityType": "Track",
    "nonce": "0xbd2cd72422a6f0eae1e03db97e245b6483100540b5a442e73752c84965c3d024",
    "signature": "0x9d89565fde13f4dd72f40e6570a7c0fbf8400941b0ad1497ef70f1840c5b268b4e136321636c7c16457a0d7f48b7d6b02822a9ca963ded206c32388803ebf9f71b",
    "signer": "0x849b8180f084363b37768C823c174C9786020A66",
    "userId": "817339612"
  }
}