{
  "manageEntity": {
    "action": "Save",
    "entityId": "929049790",
    "entityType": "Track",
    "nonce": "0x7722c9073d7f4d03ce23deb81471d29096cb6e6ce67384af801d17d12c64e984",
    "signature": "0x8cdf9cf8e925d203222ea7c0f67688679f7f36598407cd9bc105139f95f0bf3b2835179405e476dc9c41294a6632d9f3d2d2911135e03693d800a3bb744c5dc61b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}