{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139",
    "entityType": "User",
    "nonce": "0xde8284e049781927f6915df91dbee41d4971d252752e8000e6d072110065710b",
    "signature": "0x44295c05f158b48a6bba4c033d7bd0081255b362ab52e17b79f8c9a081f3b47b73e01cb172ee150556d4a98e36dd17bebbe93fbe2e7945458f0eef14993d194f1b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}