{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "253005",
    "entityType": "User",
    "nonce": "0xdf47d0be0387e84dadc94e4c0bd24ac0c8c4ecd1966eb479a7c256d81e02040d",
    "signature": "0xba25c1e4bde079f533798eb15140a05ae8f8a4799553706dda8c6470b1d525257cf20391f64d0a8ae027b6633234e56ed1eaad7ae9adaeaa9aafce91cf93ea151b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}