{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "742739",
    "entityType": "User",
    "nonce": "0x0b3bac4aab303e487c42862e968faca363c367c4e5554e09448212267786ab22",
    "signature": "0x1758ca4bfaa20297b274ca4588d385781b5dc216270a78768f04263a396f68b0016019860851f5e00bbd2080014ca970f970e926e09a9f7fad58e8c58b2d23611b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}