{
  "manageEntity": {
    "action": "Save",
    "entityId": "1734122041",
    "entityType": "Track",
    "nonce": "0xcda9f5bd365fb5cda78e3e4617b372d529ddbe96c8b018c5e93f5e84e4f8a651",
    "signature": "0xec8155f1c15a382637adc0cf951a4dfe8b65a6fc0f118214b5e273529099302c6d2b0803478a7c8f8d6e3fecc45f5a34f37ea67940514e7690367d114f43c8c31c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}