{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12742",
    "entityType": "User",
    "nonce": "0x5db1fdbbb211c1a948d224137528f58b04ee6572e21599b4e922fae2d0f0b5e8",
    "signature": "0x31f2882d38dfc0792597a78f39c09074d52be262a52f3f8f4f6ed316521845556608c672939b6b57bf9eac5fac0686f8e9c9486e35e9afe9c7a333ed98b488d21b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}