{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x34e96c342513fc905f9fd7e1734ddc53a3c5d930b27a68fb24a2a7a2d216041a",
    "signature": "0x81ca5c681e23ac706b41b9121d6564528aea7be47cf8c63aa0d0c0863b4da81b1ecfdf493a4536974fe8c91f44234d26e38bb7367c5ac8628db7520599beb6ba1b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}