{
  "manageEntity": {
    "action": "Save",
    "entityId": "962848182",
    "entityType": "Track",
    "nonce": "0x3ddc26e1a83f8a1367d30f5b8e32dc2d97cc80a49237a3e3e5fde62a7c6fa803",
    "signature": "0x89950ed251ac6d318056b83cd9119286561881ac5210f7cf25a456ebc9f2db473a876ec6ff65977a30154ba763589a26f506a49b98ef108e16fc1d3b35c839f21b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}