{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123836",
    "entityType": "User",
    "nonce": "0x688c8849e52afe4b9b6b36a06668f4d5547a1bb2889271d2c1fbd4adc834f587",
    "signature": "0x5ce6adc33383d3d4864e77b9e33dcd96def6c440e987f58883db1075381a93ca03abe64f2a4759031efdca08df609beb1510fb233f4da300bad1e5a1b8a6e36b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}