{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "939113546",
    "entityType": "User",
    "nonce": "0xd8ed48108ba3c7282502466a8332856c033ceed180eaec88673311f8fa175e1d",
    "signature": "0x12f150b424dcd5dcb1abfeb605b16ad7902bd4c2cb79e63dc57b8d0f27484e973e16789c50cfadf6805b9bcabaa6685ab17ec06d069f2025ea22a70131332e9d1c",
    "signer": "0x19EDB4c1a8740c323f6e57B80F3422C01875289e",
    "userId": "390804"
  }
}