{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "117877",
    "entityType": "User",
    "nonce": "0x3e3172fec277653e1c52451a444e42b14d117703fb424e5c2a87a5929656cabb",
    "signature": "0xd12b99932ef007f01e9848959de7e7f424c6810e4aa08f6599dbce685d9c0d663c54f324f5f564a6019df16f287d49a39a04484b95d1cb3c0eea02ee2ac4cca61b",
    "signer": "0x1912FC6B7317125d52bbb01C67381C923FA92aCe",
    "userId": "763473"
  }
}