{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9896f68a2fb91b4a173094d12bdc4ea848cc52792bfa006e2992875441554353",
    "signature": "0xb4648f52ff792ebb96c06591763cc2a3d59360ab5d5f498a7559f38b3db2a4235bbdc7c7bdf8d4720e60760146edd69a79b0294182b4824897fd6edb6127ba471b",
    "signer": "0x1a156300934aFcFa0b080F17107E5c1F9b92bA67",
    "userId": "289544011"
  }
}