{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "442750766",
    "entityType": "User",
    "nonce": "0x7389d2d34b0407a8b681d02281f1f70c5a51c496062c44a494abafdc8c5e1d48",
    "signature": "0x72a511e20d0e420129731255ee1b0ef377af51cb9fad1bfd67aa2550ebb27d4721c3b867f9312d131b455d71adb41bf75144335a503f911ae31423f7db9b5a161c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}