{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "146510",
    "entityType": "User",
    "nonce": "0x6b539fb3cd26cab56451eae02ffd6a69e3fed92ff2dbab3ab8e3d1554e61a606",
    "signature": "0x1a3a95913b26accc80f7d4da47dc9c471ddce7d8b8bf6b20f2ff6e7b6fd25d860dc849c820fdc5cdb9599a5ed5b908e30a32cbdf7809e388662f2740476275be1c",
    "signer": "0x66C0920dcA0b918ab7d0c1A5d2251fa05C75EBBC",
    "userId": "1931557"
  }
}