{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137587",
    "entityType": "User",
    "nonce": "0x0d16ea1078f3f11f6ca2bcc8e2e28d8f969d3cd3855c24458f4293ef72f8e762",
    "signature": "0x9f85ce99374c9a1391c13e01e880dbacb7c120600daff15c4c3d81070f706731172ba1c7d642ed0ffcc1c4c6592ce398ecd434edbbe81f5d4a4b871e5cd66df31b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}