{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "351990",
    "entityType": "User",
    "nonce": "0x0d4ee5bc6a5f65d2ee41c96522c05e48b62e2c1688ece5c7c0d4c7af66e6fb63",
    "signature": "0x1e20e271effe9c553acc00d4b7d10ad8cbaca788f8138fbe23dfac0cef0fd0f9106c3e4d233f4fd08a5c910fbc4aca07abe8dd05f9b9ffc2c9360c2909a0cba31c",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}