{
  "manageEntity": {
    "action": "Save",
    "entityId": "711280057",
    "entityType": "Track",
    "nonce": "0x2e1374eb7ceda26d6f189eb6068142b12cd41a151c1d15343967730b72078dd1",
    "signature": "0xb352c03e24e97c0da709591c9af232e7cbb0a76db09b76b54306b2e7bd6f437d29404c6ab4b43ce454a4ffc2be8f04b3b2c793a279b9995c6258e781e807afe31b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}