{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "388772718",
    "entityType": "User",
    "nonce": "0x1b2b2d373d72c7d0855997fc1214c8d281c3654e31fd41091f44fdc21ef47bc9",
    "signature": "0x8c28b6a1e92736b196ebffc0f1e75865d1101153f7c33bb9333b9a81390b6c7d3a7da87970f9e9ae03ca3d7fd64f3b452e565858c77edc9eef1fb264da1378f41c",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}