{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "211200",
    "entityType": "User",
    "nonce": "0x9cd1548d31c7ed2192f80e52bbbc97f25c21acf8f09c07188f61b7ceafd974ed",
    "signature": "0xa3df5ca52de2b1415344a5233463236f25631316b7812f835c1fed5c392f1ac07d44cedf1785daec2acab50520162023bd5eb5c72ba5394d3d6d847b46dfd7621c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}