{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1490648",
    "entityType": "User",
    "nonce": "0x09048d34144f84043ad296f1a46ebca1594165d82649787455abe1661fd45805",
    "signature": "0xa0cf0e72633c12c7f7e9669f5a2be9eaf519ab9726574e02e4a0f715f89d73a47def8ea66af43bf93376b39da5bfe46a32b4a562eb54bc4125c741df4836030a1c",
    "signer": "0x4230116F60d3989D218B84425D3D1Dd6C85e1393",
    "userId": "86128800"
  }
}