{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x589feb9d42bca7c0dfb1061b3e6055c570ecd3127d09f47340824356beac0d7c",
    "signature": "0x3bfcb93f9d73a323fa3f6572a91106ae793630ed68b14a81f1a9b7c6879f86c91f826d15dc97b195e4094847eedde65f623b0924b4f9940ac4dfcd259944f31b1c",
    "signer": "0x350FD8fdeE689C7E6bE0E9b707Fe096ae24f9B35",
    "userId": "19314474"
  }
}