{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390",
    "entityType": "User",
    "nonce": "0x5c26e4cec1a22aaf15f827e3b1b1d325aa20a409a4ebf1c04afce70a89319c04",
    "signature": "0xfaf05ee01804a221df33eb1597ecbb8c502cde48c27fa2d874bbd5239c08fb503a361537d60c425921786dcbe73f9a1128dac9756e149b3dfda55c366d368f871c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}