{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "164450345",
    "entityType": "User",
    "nonce": "0xdfe718a9a01714ad94408e49b05de87a16f488f3e2b8958c9dfd58a54ed880da",
    "signature": "0x524adbd697df32aa6e7c63776e3d383387d511c23d86b93dc224b16455eab4a76fb12fca28a93d6010f724b8ea4b5cb437bf2b32a98a38b5fc2c13a2b8984e191c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}