{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "240020",
    "entityType": "User",
    "nonce": "0x16a9aee4f0c9b7abfc0b93d1f1a235a349e39d69fa4101494f7a5d451c8e8623",
    "signature": "0xe2732e4c46cc09f993c1772065028777045c08f4c340ed27c3fa2cbbaed407281532beee82c2032c0c76a158d2339fdfd3222e89bb31c14389b29db1348b2f041b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}