{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x3e582a90d3c6e4d423e7670be6a7d3a7d1878c5dbbb5cc33402b69d8f54159c1",
    "signature": "0xc4bd644a08f642296d7a814c3cf9197bcafa783061c8e4aed408bf0be9b36b9d29b3753cf63ac5edd6d92bccd0716ac915430cae88f4a3041be0595e7dba64a31b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}