{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8d7c674d765e089c7d257ce4350347cb1a2c5508ba0ea0f347ccf3ace554d353",
    "signature": "0x2bc94edac06507608b7bef21883f26189d95ae1b93d3e62c60e086b1d4db664f178258f4c548ffc2826d8ce933146980bad4565f52ef7ebfc1f8cd64c2913c041b",
    "signer": "0x9D254fE9Cc05F40F9FEC16307bB37dB69d469faE",
    "userId": "146989425"
  }
}