{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x27f84a89194f38f94dc147d0cc7f90f8f444d7b2ba6653f0748b470b10b9421d",
    "signature": "0x216286868609dba3bf3fe577fa9b39c7b836c456266293c8f95b305a843ae18e60e8df88c72a2f8d766a27ccc21d3c57ead78831f141a232a322f6ba6ac060dc1c",
    "signer": "0xc8b59C26109BC380ABC47eBad3DF1FB7d6aBf13C",
    "userId": "37821039"
  }
}