{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6563a18fdb38626d721dc0ae25ddc96aecdf08c52436df321b474c2e72c8e5fc",
    "signature": "0x925db6484a996304afcaa682355ea0c4737f2a6971ad47f7ca3537753392def6504167494f4517986bdd10b628ae37789b0916956e355cf5cb5702b57c20d6591b",
    "signer": "0x2DDabb8ccA44974B42FDAf7c2626747b5bbe12F6",
    "userId": "721302394"
  }
}