{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc9fd6f6f9aa2bc7f630cb6ccfc51b81ef590739e94d1e3f76234a961cca05ba6",
    "signature": "0x58b0efd1a8230302c7812f5629f8dae69aaa6b71b3534b746813bf450a0646370847e870586de9393e50f871d3d2e5345bff7e1f080c2d7b54f1c4f9f52ea37b1b",
    "signer": "0xDB1F1b9C0026911b8c717Af80d51ca2DEE752439",
    "userId": "597264907"
  }
}