{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdb7405de9ca9963dab49f2eb2ce085daf5a68d6e2421950b1336116ba3be8987",
    "signature": "0x3dfeff470435906797758f5a4030397a9dc20c0600bed7301c5a9461036c316506bd9049e979c7fc9b8b2facca4e76c09c1e706e84326eefaf7f22fd5db3fdda1b",
    "signer": "0x63C886C6993612D237727a2E5C544882f284B1C7",
    "userId": "249971691"
  }
}