{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121771",
    "entityType": "User",
    "nonce": "0x2a6707bd26c3e3d2b85e27a84f2b295bb1180f1ad162e45a2f14431a84cfcf7b",
    "signature": "0x029c381a318ba07f93813f5fc8b5626410b71933a7b8dfd5a0baf8994835d2aa2772f582921c6bb3a4856ed820b0cb16cc7d6c8492397ede294e462b99377a151b",
    "signer": "0x5bEfCeDB97A599Cd7fa25007139EB4c95E4FC503",
    "userId": "352545"
  }
}