{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1640466",
    "entityType": "User",
    "nonce": "0xde3b37a842cad2a618e2d556bdcadd54487ab861fe8451f7a5718e23a281ab21",
    "signature": "0x71fe0578e8bd601a305b71fed8842bf486f59aea10b2c1a560688eb50525072441e27ff778e52a109d81e18a361704c7035381fdd70d8622fc62248d96903f9c1b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}