{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "166447128",
    "entityType": "User",
    "nonce": "0x82fff6d5a59634f80cafd70c854a97ba172de5b5cf3e5a97efcfcc567f3b7352",
    "signature": "0x1d7935d4aed33cb9a12bff8f786d0985ec97ce32fede66bc7293f6dff27b3f9c53a8b6bd488e888c7d02c0c8e5a3fa8be2e48cef78f166360dcdbd9a62b2d20e1c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}