{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "771854065",
    "entityType": "User",
    "nonce": "0x5dee83426b90610cc6e42b1c45c2ac6808a495fea10fb9f786871813111fbb32",
    "signature": "0x9d7123f7361e4680cafb8098f70bafd88fb147be56e391041ced56f122fd58615ad58e7658f2622914486eb1624f0c42e4720415641fe3eb8497a1eb07c3a66c1b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}