{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348012",
    "entityType": "User",
    "nonce": "0x37462cc19303a4a70b0dcc612a66f8425738c0327a4193a62e7140a13d02b9b2",
    "signature": "0x9b8d235dd06783dd84d6e8fecc18a996569169d94801b43897d47d65c838c6bf63872a0fef82d24bc3229ba68af065609dca5c7da91ce14ee9fa9b381b16c8ae1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}