{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "593684426",
    "entityType": "User",
    "nonce": "0x0763d6003439d0dd959b4525c70a30940b56094696af17ddb0ee5d0e468e99f8",
    "signature": "0x621e5adb5a3a104b561bacb525f9cbc8ea4b66d8a0cf6539df0603bfe21e01ce668be1bacc7189fee84c645080a05db4fca93b6d09ad0123a266048041ca9dfb1b",
    "signer": "0x674FFC02F71bdD4bD3Ae60c618579EBDD541E397",
    "userId": "787787230"
  }
}