{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1",
    "entityType": "User",
    "nonce": "0x87919e6ffc027b8627f8e1526d050ca23c59abd2a17fbba17773b374c026cdcc",
    "signature": "0xa993c75b99f806c4437bb9842f659d3446f7f3d51e6efbdffb74a33794e6a2e5111c5e1644f993a041f9c196fcec83f4b4d49307abff6a0125439082cc765fab1c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}