{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "300177",
    "entityType": "User",
    "nonce": "0x2a22210296f6e0a3152bc0cd647cf51670ccc40d56d4c85c4980d5772826a7b0",
    "signature": "0x1646b56d00a88e4c0aba2314e9ffac7610eb6eaa7ba79de47a4679960338d8a64ee8ef91364d6e23205b2d24a21782a55289c5d92d01b2b2dbbdf2d23e33082c1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}