{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16553",
    "entityType": "User",
    "nonce": "0x2f4752ee3a4ab9e0b636364bb7ec24a4d97e2d1e964471f717372e50f938f8a7",
    "signature": "0xf4a2c6f159996b8491dcabd93dc2cff247cbf50a534ac7e62855978630253f6254dbe47b26981575f4972bef4e43cc60553cdc21c3c6e36232b0f44078788a581b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}