{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50530",
    "entityType": "User",
    "nonce": "0x5d64976f57711e40559f940f7dfd37e8c37e8537447b6d71d9ea5c921123686a",
    "signature": "0xe5aaf75c1c2d6770f16d6728922e394412c9c307eb5822aa9cf837e9e490d67d3bd40c949d81a29587138ed1745c0172619ba5852226af14208a70b52d9097dd1c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}