{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18334492",
    "entityType": "User",
    "nonce": "0xd05eb83bc5f2f8caf8c7450c1095aec2867b9be592187006ebb8e2eb2aca2213",
    "signature": "0x4de3f7030d4221afe61cb6acb19a5b1ccc750b5cf6113f289c19c8cabdfeb7774e76a2153ed992a9488ce044df12ee8e437d78484352a32578bd0bace31173a91c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}