{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xedb5eaa7876226337d660c594f10a7f1ce3ab493ecd6a83f16b7ec2b80bde67e",
    "signature": "0x52e98f8292073fc91abaf5aa427c3ab61f171c24be65394a97332cbb84ab55af17f02fa56ab059db3003f4216b6d30d53c64ec3262664a037cfe44bfdabc79881b",
    "signer": "0x5D4848bCf5c4abA1a0Fdf2B61408c9e4288aDb0E",
    "userId": "305415280"
  }
}