{
  "manageEntity": {
    "action": "Save",
    "entityId": "2028698672",
    "entityType": "Track",
    "nonce": "0xbb7863fc6710515144bfff898f413131e47f8c72203676f7328fd9d86cc5fe9e",
    "signature": "0x70ae7c5eaad0f0eca9c8f1fdedc76ff00d6885d55356fd31d7c023bb89d025452fa4154dd2f4ceee28427770f2101793f0205a032aaa2535ec776fa49288ed541b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}