{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0x5eecad60fdb18f071b6c445e925feab5d4cfc74e42f50bde387f4e43bc1d5941",
    "signature": "0xdd1233c76865453c22167371d3a340ddf99f1258487a16d90525fef2fb82a07f26f8f071f5e05e8e26b42363304505f396847ef6e574ee670cf1c8ab7aef7b4f1c",
    "signer": "0xf76Be3e57D30ebb176cA7D31f49157c7f56E6b0D",
    "userId": "204302128"
  }
}