{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881179",
    "entityType": "User",
    "nonce": "0x384de8dbbd29f1d75b1971f57a8dbfc4ba185e5b74ef59ec0438fa3a22fdb344",
    "signature": "0x728a9ff7865fa70b3ef2253036f0ad9a2dffd6914c6a1f0017c159a43e2bb09b5a2b951d3b5defa6c4b7e5e9fc5dab2dd56a848a9f4df0a56bade3342520aded1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}