{
  "manageEntity": {
    "action": "Save",
    "entityId": "1088138618",
    "entityType": "Track",
    "nonce": "0x036376100c08f85fb939e75c7117de4c042d0c998070c12103973c4e0fba4826",
    "signature": "0x2e40fc5d8783ba339d6c9ca04a33cb1ed6682968c1dfdd9ef72b03ae34140e795da8277f23a32b074836ad09cc5d172aadaeca0e937d17966501d20b6f4d0f9c1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}