{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "545790265",
    "entityType": "User",
    "nonce": "0xdb0a02f2ed9ee1bf88d524bce5a4af80d608aedf6e19462e87ce3340628877d3",
    "signature": "0x11db19521273dc1d201d6128faab61ae959f34293aa908d7988b6fac6073aa1a1cecff8c0ea1e9813c2cd9cd17530da1dd990b0b926db112a8a5e0eecea2131c1c",
    "signer": "0x13DCCf302a981e4d24BF1B7354e4530FeCa68216",
    "userId": "720996520"
  }
}