{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6557",
    "entityType": "User",
    "nonce": "0x169c6a9463d3dae42103c23e8018d66311bc346d21f68766147e3dba0eb03407",
    "signature": "0x6b5441595c5453b653fabe644a376439565afa4ffffb92421900ab5fc0b3d60225f5456a60d266222b88eda99c730b8ad40404e1a2f85db5d2e7faf9dc50aaf31c",
    "signer": "0xDCBa834070cc02e7e4bd536cD1644e43e6C941BD",
    "userId": "214528491"
  }
}