{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "330481",
    "entityType": "User",
    "nonce": "0x5c8d47a5f770fa31097f74c10850b24b66ce7bbeeed5850b1df8c24f93a7813f",
    "signature": "0x3b246bae8272aa52d6af53604bc2a24ce2d5c3bd0e0c4100c7a9500cbc49dd0660cf9aaba5c2c4f9c3e5f608c9e760a4cac5ab00be3ce50ab3cec380a93db7ae1c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}