{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "532310468",
    "entityType": "User",
    "nonce": "0x1671c2b66eaf5c277801ce21b3e8a50498bfe4ba1691d2206005d9a0dabc6b4f",
    "signature": "0x1b00cc374618a910f94faca999a2683129177667bb5e9d38450451a9e07b52347c472668fff42140e7b0b3afed4eae01049d23294746cd31b7e83c994354a2b21c",
    "signer": "0xF6F3Bb01882EFecE0434BEa23F34C89A99b978dd",
    "userId": "657190079"
  }
}