{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x31c76fdaa93e2d3607ea1ad5902b40383263a4ff27052eefa2c33ba14641d387",
    "signature": "0xf99024a3c68d0d3c67c5f06f313bbb4bce1627ea2a80f845921808d50980eb047288b51c69b2d57a2ca2996523dbadaca263b2483d019983ef0f4f09f0acc9e11b",
    "signer": "0x90A9206Df4cA22A1ad24bfB7F1b639Aaa812Ac58",
    "userId": "266782887"
  }
}