{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "373987581",
    "entityType": "User",
    "nonce": "0xf884fa6281468ca2a66a58267af408b1f2c62de4f80a6ad2274b1d607134c579",
    "signature": "0xb8c3f55fe8b6bdb10e8b8c55e5c6b1b0966f9a9a37cd47ef9e66a1b299dffca201e4676612cb220e900876055209bd6e3d78ce327c1fb2026436c4768b918a101b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}