{
  "manageEntity": {
    "action": "Save",
    "entityId": "1814416087",
    "entityType": "Track",
    "nonce": "0x8c87c690fc6d42c34ceaa9c151d326cd7eb04563490bb8c5bd6149d12b78c141",
    "signature": "0x930d3fa6692456ba3318da56cc093e0fd8d03d227165c2dd45fed8e0bacbee1f7616e63657cd3d0e44895252e338dbd8f3ae887a6b328e095dcd21e5d27c074b1c",
    "signer": "0x97eAfE883FbF33a8b75f6f37440caFE5CC452d3f",
    "userId": "849776474"
  }
}