{
  "manageEntity": {
    "action": "Save",
    "entityId": "593207951",
    "entityType": "Track",
    "nonce": "0xed328dff808316eca1d36c4228a63ef55d99e6cae924cc95f759b94eef387198",
    "signature": "0x5027ce57ce606e1b1e4703b82a8a630ec694e1370b98833e88174bd626364004094964668136a026f32117f5bcf621fb8bdbcf5ba3f58b49ec76a1366bbace5c1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}