{
  "manageEntity": {
    "action": "Save",
    "entityId": "459613",
    "entityType": "Track",
    "nonce": "0xf6257b08eb726d513a3efcf1ebbedbd82c436af8cfea18bcddf1277e17ec5597",
    "signature": "0x9e78f971b3ba3414655826d1d1ff2fb694d2e03eff12b9cc14f89937833e0b987af9c45981946a474861c13a0929e9d93c9b8ccba862ccc4477aef986a63038d1c",
    "signer": "0x5A6DCd6E22135e4225594900c17114A7dAD01964",
    "userId": "580576096"
  }
}