{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991821949",
    "entityType": "User",
    "nonce": "0xb4673e8cf304237656bb64600c2e451dd7cdaa103e1384f24a39d6a9d8c0166a",
    "signature": "0x668c1b7bc5893cf173bc67908ffcb2c6633c34b9eb513c2eed660b8870080f1e60623affe60101b6a5f9691489e232584b327643a88eddd302120b5c0ce00c7d1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}