{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6da018e92250f1c97c0768fb65df64633343704bf79b23febf78fb2118672972",
    "signature": "0x5d3e6489a35c520246eb768eb2d91c9199731024349f820a2e5251fcf5f8542104f0776157ecd3e6145e32d9b198d06f1f17924ab0877dd18fc18f4ba85c5dd81b",
    "signer": "0xD1CB58fec7ADDcf312673c13D3c407ef8Eb01262",
    "userId": "276926747"
  }
}