{
  "manageEntity": {
    "action": "Save",
    "entityId": "1106429467",
    "entityType": "Track",
    "nonce": "0x7ea88f64297d5e1b0fb2b11af06f5d9fb9a4f36693376d24d7f4903a2ecab070",
    "signature": "0x26e76df1d56dbc2b77adb435b29e7bde2c94aef17b48023edea48106b69f159c63966652545de238bda1708f7bed4ad32e6c327feacd9147d9d32f87747641c21b",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}