{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "990836999",
    "entityType": "User",
    "nonce": "0xe5a1bdbddffb30d3eab9d6e8484d734e68491e8328cc3705703c51291dd7f062",
    "signature": "0x3e273a064d4b9ce8888f92072e716c2f4e0d79dfa37696a96cea2b2d2637ef6a2ca64e446d13341756711e550c9437d860043c9554b630f6fceb7b770730aaa21c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}