{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "339277",
    "entityType": "User",
    "nonce": "0xe8e6d0becc59b01af56e0a0ade728bbcb198a9d7f1b52c7a3ee44e1c0c208545",
    "signature": "0xd6cb2d478d699a3d5f9526671854a866fbde07ecee7375d2d51c8583705d3430576006f51fce234051a949d96c76067e668c70cf171845c6eb0ccadb96e144641b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}