{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "62421",
    "entityType": "User",
    "nonce": "0x22299b436b3dc30111865f270e4dbc13d1acadc004a54ea278d72121dd11d51c",
    "signature": "0xcf49448ed6e00ab611e09ff6f24e918b0d8f22b3e0a0a2f3d63202df6b2cbc1e118ae675433fa7358c9d688300fe4d83cc2c8ab55af0ed0b16175da16a1bd1291c",
    "signer": "0x766Ba5816f1Cbcd9649d3b301b8F423CFF252fdb",
    "userId": "758745"
  }
}