{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc3cfc868d2154d55ba6744eff236563653fef25d285400f78374d318e335675e",
    "signature": "0xdbdd2b1edac41430a9780e1b66b334012deb3c283753a54c88f81cdc096f349634821867c3e12c7b00d66f3984ac4375838e74c25abd0d77f2dee93970fbfa3c1b",
    "signer": "0x0D6F44CaD964C85a5Bb15D8c0ebAEd9f6CFc051A",
    "userId": "142063001"
  }
}