{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "90668564",
    "entityType": "User",
    "nonce": "0x8f229eb59e7cbb980b3142ad594213352c05db4a48b73d7ec471f5294a49eae8",
    "signature": "0x8198f929b3c37b282ecd2d409a2b9f2fedf973f08009f46f266d459bfb3ce49a6fa84b11aad3cbd8b34190e90c0e7c2833183e81b6a0ea0985f2e7100daa29a71b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}