{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0xf2c03a0636494399471f94fba7e390c0555373d9df70d3972d291e14d1ebff95",
    "signature": "0xb17b65604fef56285ffb5547c5a35fe99f98db1ccb22cfc4046f04471334f4227d34964c19eb3b3fc3715d8167321dc4c967687f352f5891e4f7e816b1439e9c1c",
    "signer": "0xF40Be525727aa96Cf61609f0A493d9E677f73a33",
    "userId": "159460377"
  }
}