{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "597677270",
    "entityType": "User",
    "nonce": "0x49bb78ec83b44d8114816bbe3c1f06fa9f378e61104c16d41e3536b271841b36",
    "signature": "0xedb9c4756aa24d6000286439dd0c3429a30b82c8378f560e653dce5732650c7334d373bb845883b1e5a0ef3a010ea436dccb5195ca490dc4790bbd4b887cd74f1b",
    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}