{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4b53968f46f0521ddd9114a1461445194d149865f04e8def77dd3487186cffd3",
    "signature": "0xf13cb3d95de82433ce6d85b0554b0287d5a62ac225c335022a45319d48bcfd2c6335def4f1620bd7faf2560ec27c205205412a3613831930ad037fa848016b1c1c",
    "signer": "0x9acF8CBE8f2B0d51e756C58D6d1f946A8757602F",
    "userId": "428941685"
  }
}