{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319704",
    "entityType": "User",
    "nonce": "0x97fee393b20852864ab18976b03509791b22e5c4e0a4dac23c4865757e522cf6",
    "signature": "0xc258e279836020b2db71cc57f39e6adb63cdbe6bc3c6144073a20b210bd1090f1cfa1749b6c17130bfca565ffbc773fde1b3872d6093fc2b51ede4200b33efb11b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}