{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "72975",
    "entityType": "User",
    "nonce": "0xfafcf60bb01b2f641b2bf9b413eb0ce0c9bae32bf2555fb15071d49d99a77060",
    "signature": "0xb40fbac643d2179662a9817f861447ebf508eae6c56dbb14b30fff8ed2c1ce813780bbd27027fd4902bfa25d52b06b344b58313c5cd48226b4008dea6a6ce6611c",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}