{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0xedf1f6f321f2c439fa16461f7a1eca4ad72d4b8cedfc0548c6c47638712b305e",
    "signature": "0x6e00ee175a1a8ba1d4aed0ea2888b144afe28d2904166c55f399dde34cf20b3d384fa406b4f0434c1de5e5de03b1a33537e0613500ca2699f16e4734488896221b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}