{
  "manageEntity": {
    "action": "Save",
    "entityId": "95358780",
    "entityType": "Track",
    "nonce": "0x1b31bd267dec8aff7828e0e0c5a77dfa9c3dbaa04f7f38a3b629caa75c526cd0",
    "signature": "0xf61f61e3201d95e52fa5fd9bdd4734c0866262eea41bad69fff5097f1db4f89b65b0e178d7ce4e7c1ddb668be73247a222233e1fa904df95fb9453340f2c508d1b",
    "signer": "0x1Ef5331d98352E3A7eb4f177ae6BbD27cA99eD1B",
    "userId": "771602835"
  }
}