{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc538073cc36669db09fd7bd99eee8cae102e193ce1c3332ecfeb555a6cfc87be",
    "signature": "0xe4f6ba58d6705b77cc46c9ef5609948965f34c1e3199c43e1422b37860d6ae7129ab1a08ca75d908bbbfb87a800b54043d4bb47a40f05a048a2629c05108b2a51b",
    "signer": "0x67BB09521588789fDeED5dFb508DE526dEB0B5F2",
    "userId": "289091158"
  }
}