{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb76d12aedece4f5f0ac47119d3833cdfa904925a9d9fcd2ce43a2067fa1203be",
    "signature": "0xa69020ca2c3639991df110121ed81fdeda10d57a23413cb894f226fd026065d4319a1aa535e6c5e9584d52f734fed437460256dc972097dd7f2b7c724f689fed1b",
    "signer": "0xECAef4F902886d44A09df4c4ccC76Dd2a739a603",
    "userId": "646334999"
  }
}