{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7023d456a10c3ae58933e00e6ddf2c46ddf91819d8aa79b0115cbe06de86459c",
    "signature": "0xd169c2f6990655f439cbb17fa1c803b5823caad68b0b8d3d9f2552109d238bdd228a809da922d01dcecbe94e2a4c977daf2de4c31547aaf91dbd9e78826adce81b",
    "signer": "0xDc77108e6e712f3C3Fe8E2877737aF1d144eD37D",
    "userId": "58045371"
  }
}