{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304921883",
    "entityType": "User",
    "nonce": "0xba26390a32f20fb4161fae501e91e7a4b4de71cfcc98277eec3e8a67a35657bf",
    "signature": "0xe9dd164faae8fe5f3f9f04106d54678fddb7aa71e99b7093ffec40c213732ffd5ee9eb2bf426b8dc5f60a3be254350c89dee77dc07de635a02a94b8ecb1877c51b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}