{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe205147b6cb813b57c17b843fface6b220e4203f0a40ad5e47fe047b80287223",
    "signature": "0x02440d2c5a705537093f0294d23f15247a34da8bd3e9c871a1d53370537a6d136b120c2f8d2a4924444520a60b232aae7c464bd906b241c1c7d3b89110889bd61b",
    "signer": "0x7FCffbc9FB7516A6453F59c5b9918Ea8A7EB33eb",
    "userId": "502388335"
  }
}