{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345983",
    "entityType": "User",
    "nonce": "0x25ff0b7088ad6d6174ffd1c2667dc4278a734b867bd653e2a1129abfde34c88d",
    "signature": "0xc66f2eef407f1f1603c19f00c09ed93c6ee7561c079ee4e3456b95df6f658743010233c23e82f24c47fc2a072a9cb368e06cab9d4b76166b7a1c1955a04b9c691b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}