{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "454094187",
    "entityType": "User",
    "nonce": "0x808050b677e0c864d2e782f20e03063b1370b85a06040b80aaab9f3d434478f5",
    "signature": "0x3e5a2cc9b860e92ad11adbddd087d2fdd747fbfa70582d4b4aece6d7a30427251526dd42e82bd9b0dbc3c3f3f6135dc5a3b285df11a25415247cdbe5c018a3061b",
    "signer": "0x9FF2A7F5Fab732dA57359bb3eD63a95511bD1329",
    "userId": "67863854"
  }
}