{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9ad6fa1f8112fbbcdae347e4a07f2acbc95172c5762ceca0574c7cfa563d39d0",
    "signature": "0xddac08798c5241ff42ee75df0051cbb3dda55b81a70a3628871b5fb537b3c3ac2840a52a0146aef68d19c32ba9f762e7952b9067d9775fb4079caa5866215aac1c",
    "signer": "0x9B90A5c34B6571d742aBcD603a49eF5523684826",
    "userId": "998764026"
  }
}