{
  "manageEntity": {
    "action": "Save",
    "entityId": "24138",
    "entityType": "Track",
    "nonce": "0xf291f73f772d255125a6d1a3748ecb99c6fe3761d13a1f357c821dee1212fd88",
    "signature": "0x6f61df3496c05c15f49d10d39b8c4c0a88351bd2ec312cc294d3356028f9e6c30df65184d35fc9069a6708591653ce8bd258f887e96a8423e58af86b2e4c32dd1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}