{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "939673418",
    "entityType": "User",
    "nonce": "0x5a9c340734a4fc36055445a283eaf1aae64e0c5388bbe2bbae3834713305f978",
    "signature": "0xd9e243462ffa75cb443aa6bd7142e63bc034b1ad346d7e25548bb636c0e35de85315fb98e5e5ba3a9186e4e4f39e10bca87fc2f6034041f6348aa92b783d75791c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}