{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4338",
    "entityType": "User",
    "nonce": "0x9977d148a85e3cfba3ab396ee3eb92cb4ff27895a5f1f63ae2eb74bdfca551a6",
    "signature": "0x5c3cfca46af721789cade6e21511a1cf56ea3d55bd965cd5cca4366daa30f7a543f4a073565e43bca5f968d17367a4dd9307a95ca2951c602c1d5970ff1ff5cd1c",
    "signer": "0x635a32c502d056dd6e3f4aC1eb15Fb0d90a88171",
    "userId": "1640466"
  }
}