{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307995",
    "entityType": "User",
    "nonce": "0x6e4cb36b4bdbfdf072bcfe5626007216341128f9c6710d7d504965c16732b48e",
    "signature": "0xb7328a28127a0b62e06d37ab0404de28f62e7e64b8619049015d071c82f0d2373ecf646a61bd50e5da5ec0b94c1796182ececc3c843613874a3c7e8e39d37a2b1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}