{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "216389377",
    "entityType": "User",
    "nonce": "0xf03ec0755cee5978887d118f2e3c07af76b5cd63e651109f9b371c4aad213727",
    "signature": "0xbc74d7de11a98a78e5bdf916143dbd631659aa122f9cb84995ebf137b3b8215a146c0dc1cb351688e7247e5d1564280fdeaaa6e2d63669c4fb0c83c459836b811c",
    "signer": "0x9de29362DF595E6949CaA2820c5c28c3D6b0CEe1",
    "userId": "857551474"
  }
}