{
  "manageEntity": {
    "action": "Save",
    "entityId": "1733048236",
    "entityType": "Track",
    "nonce": "0xd2d6b3d7b42078076cb8b482b784a645802a6016f73794d96d3f0a7aba404cf3",
    "signature": "0x0b2ae3bc2500c020d96a92fb33cda552fec56842fabd973f9a559980d6ae60f1070a006d6e5ed0ee4ab8c5c3b3d196c11b453813ee380273199c6cb3f3e1f8b91c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}