{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf2439cc8db9117b88a828cad357be97679ae270d8593f3efb42e88f013d39670",
    "signature": "0xae700f2192b6a7268f5050cb25dcf8b923c0937f3fbba6c1478e9a7ce9f6022608205fc523860e1f43bca5ceeafa7d2e802400bc5d0b3154f270d656f05a90c91b",
    "signer": "0x122c01b892B30716dB16F0430B2F694593cc171D",
    "userId": "967763751"
  }
}