{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x29e0e8f2bb75ee8e6bb11677deb7df9a2e3aefeb114fd05418c9bd43a317e2a1",
    "signature": "0x30aac8f305a90111396b6a3d4f98ab1d47fc01737423b7e0c39d1a66659fe4235f30dbab52531fa2cad24c9c5a1a1df5b906be608659ef92dcf989fa2417be311b",
    "signer": "0x45dAf7d8C91b01b2F5E651081b5910a6b272928D",
    "userId": "819927783"
  }
}