{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "191969",
    "entityType": "User",
    "nonce": "0xb1da72cd15520b04b34598256e5064f9ee9630de9de46932400156dcc9aef37f",
    "signature": "0x8b46fe95e5304d6c0dbb0ca79cb93485d7cb7d58eacd5902339146542248fc392b3fd1ab6acebbecf7bb1ef2e1ecea297370f9c7fd2a07b7f969ffb318fe2fd51c",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}