{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x7340133a1f433b763f54d925757974214fbfa611e4f9545d1828febe97731177",
    "signature": "0xd3d2d1fffe30bbbabc399ef8e06fadfe08a2b9f7de211e62fdb02ad7d94b0e3b4e45e02b162e120a2523a0fdf9be15bac6bea1b63f56c416e17bec4e8cee3a891c",
    "signer": "0x9d5d1f1a59bB255396F7F1e7DeB307A4F66f15ec",
    "userId": "429311703"
  }
}