{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354640",
    "entityType": "User",
    "nonce": "0xbe10467fb3e7c37d5db574d913aaa60afea4932085b221ad40ad873e0298fa2f",
    "signature": "0x91cff25acd2f942a60e9b5fa7e046ab5e9a13b02fa3c9fd2d29114141276d86404610c2a1d6a2171b7927370c23c52fb4d8aab92eb323794e8b746957e64eb791b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}