{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "707937",
    "entityType": "User",
    "nonce": "0x50def9312b37b0355a1897de343c6ea3edcc42e41dc46192acaf6151ac17ab5d",
    "signature": "0x8bcfd9433ee7715ac8d0fb5ee9f06b4d340b228938a43a62ec44af94e83e995071f74ac290178408035b84d1bf8c7de79745b45d6294b5d2b63b3dcbdc6c0ab41b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}