{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "818346363",
    "entityType": "User",
    "nonce": "0xddb712207cdb8c8bc4e575a5e977d3c0b5ec3db120cbaf8d0006664208b48f70",
    "signature": "0x471c8fea2f0f24091bd751af1a155b861467703fa3c21307529dc3d2d8d9179233701c92d2a56efcef223152a5aa425f4abe96a33e41d0d58920bc8204bef6e61c",
    "signer": "0x7b399BCFDc17B336685A59b06a03cA6B22F6B493",
    "userId": "71392784"
  }
}