{
  "manageEntity": {
    "action": "Save",
    "entityId": "1790982155",
    "entityType": "Track",
    "nonce": "0x713bcfab45aad098b45c537f8849247df3e642e1e8717686666e3e8dfe8ac9f4",
    "signature": "0x56cc3cf5e5f7c8df8734d58f768f565f5453678104fadfca9f3f3c3e514c166b26f6ab1612aee4e8399b63938f3baf908d98befcfaccd03b84f7c4030215860f1c",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}