{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0xf2addeec4a1b9c9ab8f4ad554d36d783af103a91ae40956dfc7847160d2e6f54",
    "signature": "0x8b22ce8b818dda1ebbc3f910aea6ce64c6d3190d4c2d209cafb906513a2e645b7f1dd392e83d5c9b9062bd6046538e1553e9bc4089938783f31f8da456484e3b1c",
    "signer": "0xa3C91a44f620f0b95468bEC359f89edb95AE3cdC",
    "userId": "904405512"
  }
}