{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "256479919",
    "entityType": "User",
    "nonce": "0x9ebda8918bca94ca66ce07408b04600e602c5dbe9b472a582f70f19b443cbeca",
    "signature": "0x69a5feedea28acdac06d0aa8c9efeec4805e8bd0c8e2d959883e096a4dbfd557172a42416e91d64c1548cfdead959715993ad7c4e565aab4257b8f17392fa7c21c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}