{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "187154748",
    "entityType": "User",
    "nonce": "0x83410838996d3d03d83dac588aedcf3cc365eceb2cf478b03a2e3ef8dbd0680a",
    "signature": "0x351b7a73e3fbdcc9b19d48d05cea4bd92d31d3efb6cc01f129c4ffc6054113d3762ee4cbec1e7ea5e65d4fec23ef58ad2112e6786ac40614344bdaa4a60eb4cb1c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}