{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "493851",
    "entityType": "User",
    "nonce": "0x4ca8552a1256bd6122dca3ba268b5ad0713b07f58586c2c4fc43f4a2f11744f5",
    "signature": "0x6dfca766b574ccbce7e10c1976f5075b0202edccfa7f0d9fc4a3ce649b9af82356aa9eb9c88955874ad1ec43284994802d5beba328cac983e72a5c71cfffd1361c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}