{
  "manageEntity": {
    "action": "Save",
    "entityId": "1424146651",
    "entityType": "Track",
    "nonce": "0x0571c083ca52f88520a252210c7f19831315c9649024810b1c0ae713edfd0712",
    "signature": "0x749054872e98445890a1140cabc017e19aa943af44287cdb4e5e5f14b7619e8d221c23f39023b48d1077ad480fb1447a6134060c0d5e1e476eadf6572681c01c1b",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}