{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x03309261d56a539119d121c9f10f7dd04693291d71a1cdc7924c09fe3b54c5c5",
    "signature": "0x2391c9f61c02efebca8379a8688001661f215d511669be1e730fd9b1929d36a332eae4b34ff5811fa6aee2cc6755a4af63e7d659888ff6693663517a79fb14241b",
    "signer": "0xEF1Bb589929B6bd530784003c4a665D59aFF93ba",
    "userId": "270354551"
  }
}