{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "820486414",
    "entityType": "User",
    "nonce": "0x6f81a7e69e93f902ec600e92cb316cf311ea539084cf5c8b492b858b501a6894",
    "signature": "0x4c58b375ca5650e61c9ed5fbee1cdf71295ccc59a8135e68e34aed9b31e7fd7302137a253f2514480c875502fbba69e08f023f692e4ec16745848c18ab50de1b1b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}