{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "502460406",
    "entityType": "User",
    "nonce": "0x32df4141daa8c98bb7c44b14121a8ba708a5d5905ab2d5d66c0fe0d606932cc4",
    "signature": "0x3e4eda5cdd46222100e8baa40fff601a401f1f5802fb1a3363c3aa50e5de801c2dae084b546c4d1be285a581a0d1899173932d10cdce30468a2ae0a31706bece1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}