{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "330466",
    "entityType": "User",
    "nonce": "0x618e6646fda4c12e50139ebb9e8ebf045b540e780c7fce9dc80ed9487bb432c4",
    "signature": "0x755d610ea5e04762268da300b845c168734e3f55c7e5a2fa399b1cfbb2398bf4555f5e35a7783caec1333fd5ad28a8c291e5bbe004b2f6ffa15f3db2865e38641c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}