{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "688414585",
    "entityType": "User",
    "nonce": "0xe98e7466ba249566baa1680e3666d19a0953af22913cb8ce333e95c9d06ebdf5",
    "signature": "0x7ee7060f39c35053c15421f52a56be72d10c4a044522e649f5a0b64a6cf6438d1291ecb027b9c37bdb04012c37e99f246399f8aa4177349de9fb987a66b18db51b",
    "signer": "0x580b8ce3181CecdE24dda8DddDB6a57828990d63",
    "userId": "214104220"
  }
}