{
  "manageEntity": {
    "action": "Save",
    "entityId": "1741916431",
    "entityType": "Track",
    "nonce": "0xbdd901806460c5e66a6a186306ee8b901c1e17a554e8ba56723c2a185f0f02a2",
    "signature": "0xd21df0c1fd699ae128efe4da62001b6d6cb71d470123b475a4c0147e2d26faab4714eb7576b1df37a723474914b4795ece79e40c37797256b70d463ded5e92fa1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}