{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "524728167",
    "entityType": "User",
    "nonce": "0xdcfddfbe6700473f193ff9d65f5c24bc2a392e133e890104bef66b709663497c",
    "signature": "0x55da2d092b44efe66cb093ee1a9db9d0869f6f0e8ed5ecf2e019c7ec8a247072540076e41ba6cd5b2435ccb0b6db74ae26920e6528aba737f17e900f41fa934d1c",
    "signer": "0xa5Ca6c6a8CDe087d3F6DDc71f2745F9787FED97C",
    "userId": "819530730"
  }
}