{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354979",
    "entityType": "User",
    "nonce": "0x11e2ff863b4e40f6894cbe518f0c0d7507e7a6d266f206e987b8a5b0f4335ccc",
    "signature": "0xa14b7feb1ce8360d165ca6d8326cdbfd7d56b25ad2ef4bd5588bacdacdb6856042a784bf07b533cc8e3c8a4d8554f0a6025f3638e3de56a05dcc10f11b8ab1181b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}