{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd84b9312d33e134c696e7f0fc6d73767f264af6335614331f40529d8c4ca8641",
    "signature": "0x123821a929433bfb605d05ab958efb4ba0290061d4458553802190f690af2454325c294789fd21ee167d53bef5eff8ded5bbb5be5c5d41bebf85246888a0229d1c",
    "signer": "0x3aF7353Ab58140e3Eae38487Cd5b5297Fa85461C",
    "userId": "869302667"
  }
}