{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd2ae5af627a266351da1d54c49ab2b83b47b023ed28dd63e2b593330aab70050",
    "signature": "0x0b5d9897be9e952df05d0999089912cdaffde80aa4c70b8d6a41d05620905b4b64272c8de5352743dbb4239dc63bd7f1c0bb5eba53ad269cac80c070030726c31c",
    "signer": "0x3aFD5D1be281D94192b72Fa9749045843fB5C97E",
    "userId": "364673808"
  }
}