{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "48839",
    "entityType": "User",
    "nonce": "0x3746ecb269d382303748e6f4182b28be502543eb34590823278a6fecc2746f85",
    "signature": "0xc1213caf69b07030b6fc94ff547bc4f6553e0cf84bc54923cfe01eebbef36d446a480e48b5b9e524122b325f0e9bb1892404c8879ed64a3744f2c32279029e441c",
    "signer": "0x6Af6D40d1d0B48D79D2bd3E3c8f0a45540130c0F",
    "userId": "89433"
  }
}