{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x77e367d7d0913d43f456263e27811c435310ed2a2f2689bc177859647f7aae7c",
    "signature": "0xab088df14ebdc519e162ecefbcf3b9e0e44179a256b18f9326470f7b667e2dd36a50bc0c22b7e621d55358c4e71f526623c518ae55bcd001eb7240e41a954f7f1b",
    "signer": "0xa0F423224E7884642b6af6F360e12d764e729C21",
    "userId": "705944014"
  }
}