{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320009",
    "entityType": "User",
    "nonce": "0x4857ad646239ac4e284ba53d0aeab6e3fd4a9e61a5329dd652be70ad5c8bb7ec",
    "signature": "0xc190e8a4d743ccd3a2178788f1c4e07c608b378566fa2d89e7a59dedcd6fe7e275c6978440fd3b67c05852782f4219c99fc0af2d89729a330fba3c59c026a34b1b",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}