{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1450501",
    "entityType": "User",
    "nonce": "0xccdbd87cbac069a6ffd8d05892d71d1f1a25bd60e17436347bf9577cb6488996",
    "signature": "0xc996d16b28e8d4b30ceafa09f70f7e728076c08e705cedd5f97fa47ebb16ca2e26a1338e8a25e851de9a2836511f2e858493f5f3be5c1cdf264fa5de18da1d901b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}