{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "197808111",
    "entityType": "User",
    "nonce": "0xd378614434a51eee7f965a37183db31441ee771c4505b6fdc339ca62bf9b74fe",
    "signature": "0xa9fed2690373a36b5cdce71256d93f49f9937a460c2a8001be0ef1931b36464f0cbbd6aa832cccb5305a9c4a701b8875c86353b81b463b48b5370b7cd107904b1b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}