{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "751061782",
    "entityType": "User",
    "nonce": "0xfb3fddce0c78bfa1de4e98997a787c9fbdb6e19d4a8987e64a70b96e9a9efc17",
    "signature": "0x3f3fefa8d9d3e31b14a063ab51c0f6e0600ccf416fcae05feb9a4a23aec8f2da0d9fc6c314971687fc437812ab9d16cbfd8b4baaf4e68768ba2ba377aabed2a81b",
    "signer": "0x0d0E0D19797534AEF52736C60B52793E9f88e24F",
    "userId": "603294620"
  }
}