{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670307808",
    "entityType": "User",
    "nonce": "0xa10336961fd2d3fc6feb7447fc6e7ba2e38b6f90d2a5dd223f720957f404598c",
    "signature": "0xeedeb037b644c8b67d3e89e7cad32ce8ff31ddc0b123195064113600eb4885ba19793f4012e76c6fa8dec1b11fb5698c5703c41a2e1805a571792f67e52941731c",
    "signer": "0x29DA29cFDe586469112dA8593Fcb9B91e30468e1",
    "userId": "121018469"
  }
}