{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1812",
    "entityType": "User",
    "nonce": "0x11857ccc6c06c4cc7c0f5f83152bd3d0fb9cab4196dae9c14ee6de42aa4cccd9",
    "signature": "0xb689fc358289aac37100b5dea239de7f0d37b16612582add8e8b9219900ee654685e40ac3ea6c8201e0d36aca031c555aaee9bcb35a18a604450916c3a4006941b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}