{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2dbf37dd3dc889dc64528ffd59c883113d3c112369d1dd2677df712c501925bb",
    "signature": "0x304157e62d34a6e555ba7a1e3f4638c62fe577104e981d594c527b6d2e2c63034e3b05f9d83143c17f2ba8898752ccd0412def137051fccf720793de34f323bc1b",
    "signer": "0x75ACCD4160aaada206b4dCfA68E88187C9ba9A0b",
    "userId": "799571887"
  }
}