{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "883812378",
    "entityType": "User",
    "nonce": "0xd5ca45ce70f6b07c795b6bd5721d3c88c2face53d6da249cb42eec2304ab16b2",
    "signature": "0xe1da6490cd41dabd4bf8dd39d50fbc952a3c024add98b595929d80025e02575e6d5387008b34e1a3f9354e2d56d152f926de6c4b467137aa27a4c233e541909f1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}