{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190942",
    "entityType": "User",
    "nonce": "0x1e057fc48497b2eb4b1d74d7bb45d2ac4035f923f02396d09549d699e204338f",
    "signature": "0x4a65b7ee1f3954c7bd3a321d75f402ab64a330d5473c88d8d8b2ab3e26bd002b2b42c265da0253fb9b98d61275ae91037dbe994e05db488e6be8711f793a53161c",
    "signer": "0xb001DCb64Bf57b3EcC76C4Fe5AbfE2a8B084D6ba",
    "userId": "641557420"
  }
}