{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x4e498536a6056c55aefcc920929c3f5221a9b9c0c1ffb5e1a24bc0e16ebed906",
    "signature": "0x34a104d36b81f7f00d3e51edb32f11d50fd4bd580385e693119a76794ce7875f62448b7562d6423dd4c6d13f7b1ea514c5a8a7d1a8d9a81a10319e5c624b31461c",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}