{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "699855727",
    "entityType": "User",
    "nonce": "0xf6b6aa8ff4da74dd6ce5e82c6e596d0000c9d6f6472674d25476ca2bcf5f5f11",
    "signature": "0x6e503210145e52f9bdd8ff6f8b37e5f7e3ddd04c9fdb1e4a53b03219957b072130451f3a85b1cf11d81d3dea0ed8c5690c4a5fd7b96fc4c542e2e68b980df3301c",
    "signer": "0x745895918A1926af8a7B4C34Af51BdF98bf5C7C8",
    "userId": "54958731"
  }
}