{
  "manageEntity": {
    "action": "Save",
    "entityId": "1406833172",
    "entityType": "Track",
    "nonce": "0xbc84313d0c541f9465d965dfcb1865c64d7567af74b67da2c6bd5711483504f1",
    "signature": "0xa222c616634400c8fdb700827d7d98a5a6a26cd1c897e71ee04820e68826de314c8aca3639428e81008fbe95c1d44c500958ec146701d53e5e4d7d1a6a904c941b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}