{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299279",
    "entityType": "User",
    "nonce": "0xaaff89a6ee77aff92d4aa4dab0fc937e105cd4cb4fbb0f99e69d1d218f40e8fa",
    "signature": "0xd01bb732d5dbfa72e3c45b279327165542934a8ca5b2b1dae7add2bbbb08c5922a091dcad10048ef98d75cbcf33c1b154064a0d54be1460d18feedb8bd9411251c",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}