{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "211895",
    "entityType": "User",
    "nonce": "0x5096c728298c2fb20b7baf59212f733a8c004b70ac9ed2c6d10e8e4ea2c0e497",
    "signature": "0x61448bc29b57f5192397c0e8d9ef17634e14b7592dd19db34577c53d6764f9f11c52a1ef7663c76da0e78b547b011901412689869c66837e9dad7b5722e926f61b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}