{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "904230991",
    "entityType": "User",
    "nonce": "0xa4a739ecfe56212f75a33c67ccb69bc725ccb472d6667ac238749e0a6e552bf6",
    "signature": "0x62dedff746eb81bf0a66c3cde827e6404c98ee617ed5f265d2a4c2c933d7a3ed3f4ff557031b8158b24783df313741faf1060dc12b682470c7af84d6e5f87c2e1c",
    "signer": "0x706747243B64d94c0613b28B04d5B5302804e671",
    "userId": "205114819"
  }
}