{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "483873579",
    "entityType": "User",
    "nonce": "0x0f4e44fc4144e78b1c5441f14ec3d0d62151e3ba5ec1de0c539a86d2fd6fa209",
    "signature": "0xd2dcf698d837a264e93c1d9dc89991b87daaea1e7cd6b4da7104b0d5183c7433640ddba09b70ba45e4bc823078ee4019953ba7fd451e1d3fa87f1f829cdec76e1c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}