{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2a870f29cdfaf52ed7ed7c845c1a61fb5a7903c7dddbf4a7dd04a577c04125c1",
    "signature": "0x6bf61db092e13d3957734a4e428b5e8c738fe57e685994d8a63b763ca64271c22fee3a71d328d06b05bdeb2a4fec2b15fa486e3d0891d1f0d4a84d69afad10a91b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}