{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8cd32553b4c78404ec6717090fcbd613b868ec91182c0ede6d383c79f974a46a",
    "signature": "0x44f9f6263910ea6112f19a65538247335eeac4e7046638e5332321a173814cfd3be45808185f7bd57e19cbd50ae5ee6cc4fe9c20fa6d7b13af855c5bcdd87cc71b",
    "signer": "0xa7F7C284b67c3964a36eB3eA1C6697428fa1546a",
    "userId": "456763559"
  }
}