{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9593c9ae895cf4f3b690935a8c547a31a918923b8f6e1dcd91daf1121c8805f8",
    "signature": "0x644a87d9c08e74c7327dbc4c78e06cd230052c3dd54a3d527b08151c2f215b0a44d04978858ef424c2e83de964672273d4a34e4c0c1d1f873dd34f79421a6d891b",
    "signer": "0xa153977DafF5771350d33A34100b15CE1B8673F1",
    "userId": "706177668"
  }
}