{
  "manageEntity": {
    "action": "Save",
    "entityId": "1696475097",
    "entityType": "Track",
    "nonce": "0x24d54a1307022c57dd5e11cc79cf1629a975523b804b8061b817eb23b6b70897",
    "signature": "0xda6bca3ab731ef90652eaa749652a44bebd7e5e4e4fdeeb02bd1c40a5f249134102cd0ee7b292d189fd9359d97d6ea7103aad7ce9fa25c0df5ceb1dbc341bb381c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}