{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x255470fd76f2c12111d76b60f4d77e4ef6301b3c258a15272ca0df283f2fd5d1",
    "signature": "0xf61fbc2d4175833d8d95c7c6339eafa24c4f66bec15d443ac7117a9f6c091e9f7ce950325b0f6755c8806c5c10dd7c7cf33786eda6c86ed261e3d1447c47686b1b",
    "signer": "0xf1f0c8378f5B4D18702993e3A161e6AF470670df",
    "userId": "765583894"
  }
}