{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "122472",
    "entityType": "User",
    "nonce": "0xbdbe69431981964d0cde90c0a5bf8c601d5c0ef3e1524b5c4da9bdb745a25a0d",
    "signature": "0x18ca10fa7224e0c2bc46031eef8cd8da0682d2896563741fcb1a988baf79ec152734a2b82b2552cc650d9506b453d926a1cff04778042bf0575c6e002b11e33d1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}