{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "199164",
    "entityType": "User",
    "nonce": "0xf52a05d38e0d32a5992109d9a02530277749519f9c5631c588eee9f66790f7e2",
    "signature": "0x6f0728ebba791d7da5bdd18951e709812ffbfb056559f63139b5592be692bdb83162b513fb3a9830a05108c547165268ce21ba158798cce1ed51085d3227469f1c",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}