{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xe6643f63b798144fdfee018665d3a7df3a4ec48d453d8aada68e3e0e3d29f33e",
    "signature": "0xf885b0797f20c93a06c4b27861586e116c3a96fa23b84241c8d8e26b04f5aa1c112aedb68dd2ddf054ef6ac60db2d088d0aa9402db05ed2bc143b015347208c41b",
    "signer": "0x57B72EB07de2F234F10e779f1Ba99344cEa3B3A6",
    "userId": "873528115"
  }
}