{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "189739",
    "entityType": "User",
    "nonce": "0x186fc207155401f8271cc9ded3af7beaaeef9209253f91bb31b2fffbdb496a56",
    "signature": "0x7ab08af9979956611b80e365d821f84e82d79089844b445245dfe3c8d6c8d8f97f6295470ea2b2f6a898168dc281d711b0ea5cbd1bc4a33c86b09c50517ffb821c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}