{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50539",
    "entityType": "User",
    "nonce": "0xdd96e121543ce59afad9e764498de98074247abc63e02579f8d30b1837570440",
    "signature": "0x7a813229e1f29f2bc68b91e1fb2c1f952f43678408064eb6023a7a6703a5333d7a1ecd4e7fe3197617e6949fbada9dcc20ccdfce8145176816bda7a601a91f9c1c",
    "signer": "0x3EC8c7F4Fec5D21Be724bB4D43502e44e018690F",
    "userId": "53828"
  }
}