{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190570807",
    "entityType": "User",
    "nonce": "0xb43dcc75f7a1352f69d14ed44a34df5f2e918ef743fef347c92ce0a6a6c9f44b",
    "signature": "0x28bfb3498e48bb89029cca65567dce8db8ffa140181eeee1cdfc355760cee73b3171af63aedf234d8eaa9b52c01cb6b804585dd2647b80a4aba55e8bf29c5ae11c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}