{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x91f705f69910d58cc75d3fd6724ab00cf05ef4ec75d4aa54c41467ae769e9bd1",
    "signature": "0x2561193bd7aeda6125801b1c4d61ee6362c018010bd34588bdae709e146adcab5208b458ec133612319d536d2a6505f282f9c90359da6c19bd499186bc8bae141b",
    "signer": "0x12E99fdA952cCE832a33a61827c5F498BbDA0aE9",
    "userId": "318512883"
  }
}