{
  "manageEntity": {
    "action": "Save",
    "entityId": "1050538626",
    "entityType": "Track",
    "nonce": "0x1b0cca03e5a677179321e0c6aa5b384f1e6eb711f2649d93dcb79e2ad0163e0a",
    "signature": "0x2f94498cd54eff16c4551aec3b53085caea51c3bd3025c08b1d11f7737f7c8c825e13ef4321f3640ad4c7ea9ef7e20cb4a7f391c9683dd07f006fd283788fcb91b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}