{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "287521",
    "entityType": "User",
    "nonce": "0x1862b955dc31cba93e37d67b702d5386358c2ced4a44ea366d79136738495426",
    "signature": "0x4395e1eaac00197860f158c3af87ef18824737854cd0da1893834df93340061b2a60561c86602e0878905d47d7c5a200286d3426919f9636c094646f4b9b7a191c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}