{
  "manageEntity": {
    "action": "Save",
    "entityId": "62036701",
    "entityType": "Track",
    "nonce": "0x7a20d054dfe9db1c3e9303cde5e545a0b9e94fa7bc28a1777c6c6ce8c5ee9ac6",
    "signature": "0x9d9554b5f9df85386ea47aa4f81b43aec2020e4e45aac512a8e026d0660a41af7444e09c268a3ec9976bcf9f685dba7c4d02cba204769178c631521d7a3da4611c",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}