{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152590",
    "entityType": "User",
    "nonce": "0x82e4afb5a4916caf83165072f2be4f4853907fd00bbe1eaf66dbbf38cdca9f74",
    "signature": "0x8ec23c187b568cb4c3016a0404c6762f0dcd42498147cc7cde86b45c40edd6046a777fda2adc56cdc3031989fc96f74ab3ce9175c6820ddb50935516ecec42f91b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}