{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "120199991",
    "entityType": "User",
    "nonce": "0x0e4fe64e44f4352882951f18ddfc3d18f3c172e0cc381412dcba8798b6f86eff",
    "signature": "0x30b42fb20f9ac6293a4c8c5cc42b4a0dd02e647f8d4b64b17dc369c94d5db2ca4c4b2cabe8ca9f38a7a8c3b61ab2dc1702625337dc6e7ce74fd05ec1b48849111b",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}