{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "383103",
    "entityType": "User",
    "nonce": "0x90d6f1a94ca955914eba1f9a2d08560929c947f6a95f622decf9a9d3700580f6",
    "signature": "0x7cc8e9145890c6182415e08fd610cb6e2c145e031b7a9a43a5180fe0ec7bc32b6ebb54c9073facca7cf697c046379e3dc9d039489ee5f615374624b266d1777d1b",
    "signer": "0xa46A0a594054691B5d8AF411eE84afeBc428C090",
    "userId": "974135633"
  }
}