{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0xe4b12de54e8a77f8ba0c0a7144fccdb2ad719f5dbbad425127cad705aa7fb401",
    "signature": "0xc04fca9c6857989a888edc16c9b003c14913fe985ca640df37b954e52b0e3b3d04465b8cb079df6efe998153e048b249dad468eb1ebf09d26bd01f759ad06a601c",
    "signer": "0x7ceA71B4A8C4013A4f57c1A57eC0430915572e86",
    "userId": "31724295"
  }
}