{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "197743",
    "entityType": "User",
    "nonce": "0x25c2422a3e6daa7f14f021ec5bdbbe0eb3c33137e83ec92432cf6ddae869d8d3",
    "signature": "0x39edfe53aa1307ca0a3bf2f7c9617d14e1054d2b3ff6fcfc2ce4359b1e2008286e40582632eabf506347b601c7406de9106b978746dc33e2b187fe93f9a898651b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}