{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0x218470fc40a997e36cf5bd43c6260f7a060f300d981c7d1f375924993d5882f3",
    "signature": "0x632864873a60b188104e8ae6ce1459d0c6754ec37588b8f49d57f5f3f368adee2a47fb5d50bbe4ca626c3f4c2956ec38ea4740d2a6320e0870bf0bd5788c87b61c",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}