{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "379703",
    "entityType": "User",
    "nonce": "0xf93e6d9f9484b3db174d19aa0d8834e284726cce9b05616b805463c5b1b347c3",
    "signature": "0xb75ab05736519c15f9ecebf7ba3af49184735703a27d48f86404aff2c420b434637fb047fca4c40578933f88f08d180891efd7432b5cd6bca43ef0b42329f1031c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}