{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348321",
    "entityType": "User",
    "nonce": "0x74a771704214fbf3c0e6e2a5d6d6dc625dd1709d8c84be12eb19f665c7be7d3b",
    "signature": "0x76e4d02185aa7629712eaa28f0667c1c5a07cc20f7c4db1a53ec17cb671fa84910e807072ac0d467a4520cb5c12f210ebd2f5e0fe51b6d300b526014eb1c96051c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}