{
  "manageEntity": {
    "action": "Save",
    "entityId": "164895850",
    "entityType": "Track",
    "nonce": "0x238b76da0200adfd3654cc594e043334edc5a3de19d6ab112c08b7184d5f07c5",
    "signature": "0x0124a647aa69e764ebc299f51e1ac4884be8e84e9a50fcad3770529f2580411e5caa3e10522e843a45a131d37c35e3553c17e4b32c1666f44acf6af31a55214a1b",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}