{
  "manageEntity": {
    "action": "Save",
    "entityId": "1595115009",
    "entityType": "Track",
    "nonce": "0xcc830b8244c49747f4127f1477be5d1858775c060280c90481d0de229d7d4119",
    "signature": "0x9d36f16a23df8876efd99c9b1af56baf639ed55350cce6bd19d4e03b8a380a79684834c9e524df57f66c0fa6116afe20e4f71a97a1721be385e99bcd0eb532091b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}