{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6906948dd20f72e60a98fba531fa5e426ea0bf6d675cb706e9c1ca204e1968b7",
    "signature": "0x73cf3b8011db8e2c69ec5aa1a55874ce19b987844010aa7f7ab1286572095ae5355b4b3fb9e780b5ad35d4c41788ebdcc9c93ab7b5ce7e673091218468de6db71c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}