{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "214436",
    "entityType": "User",
    "nonce": "0x3e1502a88d699a4f1c0f99e0825968194f80c0c4f7a6c9b61c09d33cb8e73878",
    "signature": "0xf61bf77d906c749ac7a09551b071ce7c48577df2fe6948d13f2fc7462531a3363a52f8d02340bf974cabd3b933c5d84da8f3958adf9599a4d1aaf17d75cf7f561c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}