{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1477402",
    "entityType": "User",
    "nonce": "0x8d364362720c08e18fe6a739e946b0d09335ba455e4c57c6e23316f89e8a70fd",
    "signature": "0x52a1185171d97a53d775cd5d9b592452cbbf4b1acd9e3faedf06ab43e0c5e613216280e20835bb8fadfd8ccbf59f43c1acd00cc7ffb796123ae030a6f876eb611c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}