{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "240171275",
    "entityType": "User",
    "nonce": "0xf40d4955ba7ea78c31f5def4c3671f2d01228273bf4f83ab566ba23b481b24cd",
    "signature": "0x1757a372de9f87efb625b26b5af90a4c8f0f95d8af58dba20a6ea9cfd9ff1dbd78b6785e41e4b5335ea4cf344c7e21007aaf1ade9bfd68d539635fbd301bcc4c1c",
    "signer": "0xe4bD72b949e359ED9170c28151f5E9C3c75dfCb8",
    "userId": "67242552"
  }
}