{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2390",
    "entityType": "User",
    "nonce": "0x6ca839c113d73c9b7fb9c63e1e622c610c09e4bb8112d2173460101872419ca5",
    "signature": "0x959207d8d0f3c3ed5358f71af08fcf458f4d1e0b41eb0fca8d43d334ab816de235d7cd684da9ea8d4bc5393ec8f1832a8090d5ac2d158c3c26a2d64e5574fff71b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}