{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "107971",
    "entityType": "User",
    "nonce": "0x418c46a1f68dab8f93efd03587746591d7bc9cff550ed691f60640d74b9753aa",
    "signature": "0x96cddba3c566eb32b344bd0b8c1b54e273125ce755426ed27803e89395ecf71442ecc8726bbd124eb0ceceb19741af4d6e0107129c7b9d95b740d790527a97d11c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}