{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0xe9a0d1ec3ebea40d393cf347bb86e934563f3bc41a3b4b56fe6b2dfb9819dece",
    "signature": "0xcc123e29e2037201d564d9e88acdf2557f7191922224002a1e2184a67dcf73b41fd29d8831475acd756787aca70760069d24c127428160a34f218ae5c25000a41c",
    "signer": "0x4affB179527ee604CBCCb000A6fB3E5563330F2e",
    "userId": "265097712"
  }
}