{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "66452",
    "entityType": "User",
    "nonce": "0x55ecfabdfa79bec233e4471d8aa9e2f4e04665a0d1c8656a56967a25c77718fb",
    "signature": "0x6a9476c30c6ce80889a11c97107f599e7f9f1881ce4d635a93ef3d1e53da16bb3bcaa3cdc867404f96dd7becdc05d7d3b86063998293e1db311a4e7bed0aeb2f1b",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}