{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x13a244f3fa34cd8c1ca695f8eb9cba8ea8843245cd7447457f01ac3875143b37",
    "signature": "0xd562c28524287577f6c567b59645c5ef958f8affca7e2f255b931f7448ea38110a039b2921bed4b1106808fcd0d1b34a3cd3c3e84c63228326a9c90cb330dc911c",
    "signer": "0x262280F8C67eEa49702D4CCeB1FF9CdaaCeb4dAA",
    "userId": "525780347"
  }
}