{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "601282125",
    "entityType": "User",
    "nonce": "0x6468796d2efef0c2c77c7d6b2f5e1f6313cf941da92878330b55f8cd6715224a",
    "signature": "0x4ad20a0dbb6ae96f870dc90255da8327ec5afbd06793a0ddc6650e57cc19f5b36bff9cf59f9554c15a6675a402f47b537b39771132f6decabb22ce409204141f1b",
    "signer": "0xd708949D0521A856Ca6eB44B4112bAEE59741ADD",
    "userId": "490478463"
  }
}