{
  "manageEntity": {
    "action": "Save",
    "entityId": "1090143407",
    "entityType": "Track",
    "nonce": "0xea84f2793f75634087238615c6b9d8c02e9149e20333bdedf60b0d075ed66869",
    "signature": "0x0e53124e6cc293b73234e24c841b698a122b7ef1cc8955618b6d005488d9489f7ffd94eb5fd616324882951b39d4edcbb84a5fdaf512a8be299dcd79aeb5e0d11c",
    "signer": "0x4790266c61e099ad25DAf3276E0e4A155E8F8BDd",
    "userId": "944914930"
  }
}