{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "294973155",
    "entityType": "User",
    "nonce": "0xa436d874cbb190c0dba178c7cb42664323c29bc84c43b99cee79ca657b6e5a45",
    "signature": "0xb9d93a3cd6cc6e7129198fbcf8cc4c98f5a62d817aeff0c973cf1ed7aeebc7040533e3a64ff3ddd20f11ed3b5e02ce9f58f5fab9cd5ccedf3869c057eb646d8a1c",
    "signer": "0x648B4387a313b9F9b1b70bcf05cB555C22F27B78",
    "userId": "839233202"
  }
}