{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257465",
    "entityType": "User",
    "nonce": "0x9cd1a69400882c630f10f80417fcf4abbacb28ffb518c309a1135448ab50f5c6",
    "signature": "0x57a4a81d2b3dccb35582b8fa0dcd484e31253bdcb0ce7f3ca1784d1eeb34f86f2b721a1f52ef52df10ecca048815fb4ee77d50d654d2d002b7f5c6a6dfc197f11c",
    "signer": "0x97eAfE883FbF33a8b75f6f37440caFE5CC452d3f",
    "userId": "849776474"
  }
}