{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0x162f89dd7844ab4d481a047f536910e4437607dbef0e653b7f638f3e820f1fc0",
    "signature": "0x68952143690103783599325329ddf78b051f42911e9b917223370cb996b3ceff425113fec6baebb45a952959abfa8d59a2c8bd16378721aa52e2fd0475bf61181c",
    "signer": "0x72C3229e8a009963fcCB987460463895a2989d71",
    "userId": "109371348"
  }
}