{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x50d80cd8aede6ae43cd687b25b0157c9a64e13518fb31cd77f0881daffb83851",
    "signature": "0x1d2d75750c773cc0c1751e3f31a38d32ad4e6865db852600655ddf76dfee720b7e35c74305e42ce6d22421895e4081951688a28ea94cb3142db130fd8c690f0a1b",
    "signer": "0xf780154eBdBB8D4aCF09B6dC777C1A460475D360",
    "userId": "613308197"
  }
}