{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1bd90a26f5aa4662603a6e913855e947b2171ab57c7c67cc3a6203d68ec24760",
    "signature": "0x121325759f53ebdecece83c168d047732d3fc9318baa38cfee1fb3141f71e77a123f834635ad869a84c53940c831644e115cec5913dc4d13ac1658e95f72c7ae1c",
    "signer": "0xD64b2D9033e011ECfbF35b2D18B86a439b9ABBD4",
    "userId": "309071067"
  }
}