{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa670f7663d0763503bdcacb63809da65790a8f87b464b4784c68994bedeeaec0",
    "signature": "0xb9ec3827d7dc1a29f3e2d75cd6aeb45dbf4ef8e24001047bc0d6353ec811200867d60ff17c3c5142360ed75ecb4d5a46b3dcc3709df139251fb4de133770b4491b",
    "signer": "0x40C5536b07BC8821E975B8925BD4C4bEd34a7daB",
    "userId": "436764849"
  }
}