{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x68d983da07742ab68537e68fdf45de21289900b4085e635db9df8b02315229d7",
    "signature": "0x045716b6d726fb0484a5f54cd0e3b8be51468a92f7eff25891a7778d92461f382498069caaf400f9c8f7bb23fcb230bad468c9f80f62aa9c335a2034a17ca8961c",
    "signer": "0x60495664C60cF8427e991465f31ABe2F9dC345A5",
    "userId": "696978255"
  }
}