{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1475185",
    "entityType": "User",
    "nonce": "0x8f1fdd671da9515b989c991a9b3008891c7f5d14a9f18b4b4358a5ab3fe08a86",
    "signature": "0xcd622edddd320223d136eae659d156809c436684fd7a7535863f57ea0050b02946779ca8d4231636e30a9932095442a4b8e86d17971829572d50816dca295e061c",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}