{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "268900563",
    "entityType": "User",
    "nonce": "0xebe52d1f4bdcaedb7e00d381dacb290133091485f7827440e19e3f7009c6810c",
    "signature": "0x5fb6c6a2d5e7cb12b51973b5e02532f305f477882d12115a2c2e5eca480f071400e36538ca40aa0ec1faa3eb2cb0575e2fcccd924b642269f803995d818a536a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}