{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121458",
    "entityType": "User",
    "nonce": "0x591c0adffbfacd5db9e450703512bc17668b85d9e13ae10164a5bc0e3a8fb18f",
    "signature": "0x836c2e822df457a649b7d1a387bcf127b8c9c549848ffd46441276805573551151736c6927c30b71b9061c599520be7b01a6cc40376a2bb5729e232fd54d93c51c",
    "signer": "0x6Af6D40d1d0B48D79D2bd3E3c8f0a45540130c0F",
    "userId": "89433"
  }
}