{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1212b2c23f70d97cc47a3b97269b2570dace3a5cb97c1be0455e07a74548fadf",
    "signature": "0xe6ca055f86c0f808bac605a8280667be2dcd71d4d1e264bb130f4519e37c586138001f3c032b564ea027a0fe3ac8c9749f6649971fc55b72dd69786dc1a47d851c",
    "signer": "0x39Ca2c007b324e8dCa41DED8B5828033EfE71A80",
    "userId": "925041154"
  }
}