{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x9349fd085c33149ccc60b331d10365eeb5b2b481952eb04a48b8646167613876",
    "signature": "0xfa1a2a5fedfa561efefe3755b696e0f1272c91226e08707ac0bc16022a39197f124d974048b666b5be1cc95f5b6e95191d357d1a94194ae4b340c1b7a1b38fa51b",
    "signer": "0xb8909c41963586dbBe3EbbAB4FC8F1f8E6970Ce2",
    "userId": "435332232"
  }
}