{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308529",
    "entityType": "User",
    "nonce": "0x2680db238146ccbe44de982ff75c0fdb865bcac7638259863f7f977877248582",
    "signature": "0x7bbc171930e1f3c3cc088002956da3ff485a23b5b2f7ebefd72457f675ff31b570387b02496d4ae4ba6b92e9d69370a1540eefbe50c7edb557ddd1720d27cb011c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}