{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "157278",
    "entityType": "User",
    "nonce": "0x5215777867d0aa18c08859db090b7e7d6b0b9c7394e2c8e2f767cc7a76ab4f19",
    "signature": "0xaa70bf0da9d2b231f4050bd29e44898acc3f3a37914cbcbd4210054d6d03e48d001b14f3cdd90bd5353ef1cbe6f3c2258e79cf61ef558842d88aaf4e5c845b3c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}