{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8edaf79061b5a2d6967b5c161e800b15c66197c12a21b922584e2c83055baa40",
    "signature": "0xbc39032134878d349ce0e934436387602ebcc60de080765f2e0b8c17b398802136b49ec492ab29a485566f3d8d45d25e663a8837c35eb3d9b6d897c536c3be2f1b",
    "signer": "0x78D1fEfBadDdD6A88B09E622f64c70F7E6F1c810",
    "userId": "527826008"
  }
}