{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x45406fd4a4dd2cf93bdcbda9c7866445458e87510eda3a68363b5c6c69143efe",
    "signature": "0xff43d30cec4b6e4dbb129d19b17dac08d35cc342c7aa980efa9ad68dbed9daec0e2e73321cde31a3bdf43017640c5f3c4baeb25d026249d2bc0fec659645434f1c",
    "signer": "0x36E4d42a0aF6C43f9Ef504A4aC18eb5E079031FE",
    "userId": "819852750"
  }
}