{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9ecf1e1639b5dcae7c3d16f68e4581274f595ba9a221abf58cae86acab4eb37d",
    "signature": "0xf8445e843fd75135ea47a6ddc87edeaa8486f9ca3dbc00fd4bf4d979305c666218b9faeeea80f945c8de5fde1113cc4b6afb20efdd17cf00ad0b47d8741c8ff71c",
    "signer": "0x2455c699b34cC997819d2497D54065DaE8327e7B",
    "userId": "435085503"
  }
}