{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "21106",
    "entityType": "User",
    "nonce": "0xd4861f41f13a113ad3b30ea91221c1260fb69b59a83aac86a24252f1dc90369c",
    "signature": "0xd2e16af59f4623b5567c94cc314b9ae89662fe8c8dc4678aa102cb4e9897f6fb171c435ef9f386fc436f758641c2289a1a60c8f2be374c41290198cd5184bb361c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}