{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1729462",
    "entityType": "User",
    "nonce": "0x81251e3fc9e823a1127760021f89bf920fe53a01bec23514b2a4eb9510f1ea7d",
    "signature": "0xe06c3af0fc17e7fed0d4d3349a7199535a539b55981360e3c75f4cac5a588c1b27e1939fb774a62e27cb57a5dac8d5840a429012b0da4db0c3c1d0d2da59ad8f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}