{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x77b0d6073cf3393bbacc9e7c220322a70a627211eb333fd50fa1f618de25300e",
    "signature": "0x6b7f6d713edb7531b7b9c4e32b0a51ab4792d2d4d7bcecd68965730ed61038fe6afdf5a74c513b2ca9b4a9a56a4f86a665275a90f4af05b31df9a0e57b144e991c",
    "signer": "0xd4614D99680E0D5Ae4629DFD26c678C47A1a9Bde",
    "userId": "175028576"
  }
}