{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x8d428ee0fda4b193683c5b18d4207e9eff6b3bce3286d317c6530f313275b8b5",
    "signature": "0x48f99a9a0f5185a1679e694770ee7f70f09d96a1bb6aad94359b726bad6c3a014974035265067c85499b11fdd766bd066cce8e76c7698b469aaf50648dc4598e1b",
    "signer": "0xB874f4621c8c59121feacEaD49e379Baa95ebC5b",
    "userId": "480497000"
  }
}