{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "197630",
    "entityType": "User",
    "nonce": "0x8bbc1601f4a93c4228dd840105a9367c3888cdc1a9fb30d5133415cee36efd5e",
    "signature": "0x19a5a72a8d9e494e0718af8366c55c63e6ad31be2374551d785c24ce3534b1d42a7ee2c2f9bb270e8b63376d09dd14b0ce55cf0126d570973504f64f14bc8d351c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}