{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "171637838",
    "entityType": "User",
    "nonce": "0x45e0e715d7054df9c95f12b05d6e25002641e0dfd4b6d962c6717dc60af34293",
    "signature": "0xb88ce73ecba40ac7102f5e35ad857dddaf81f4380ae6b159cce5e8787b28b19718e301524f1e23de36f4a768d5fb8f77f3e9cd8f26497e3f210feb34779268ee1c",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}