{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144449",
    "entityType": "User",
    "nonce": "0x1e48809fcdc013c8cabeef3b5b17561d7e9fe0c80f965e2b4cfa44e5fd7ba922",
    "signature": "0xef51dc02b11d45716f55ae06d32656142c9ab7775ca691df7c246c95d32427a12ff9e5a2e156c18878bede035f26f4f48c9ab303aea7142302d6c9033a2bfa811c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}