{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708291620",
    "entityType": "User",
    "nonce": "0x96009e9d2c770978d56e3ae4658e85dbac7c84d4a322e6835c6de2ce089158af",
    "signature": "0x35af481a76c262766a71ffb85d6b2c8021ce1d1b3bdb1ee7651c4497368450ef6526625c045071787818790f2379ba874ed6c0aa90929d85be21d313beb2fcf61c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}