{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354993",
    "entityType": "User",
    "nonce": "0xbff03c3d828a14901dc3eb5166a69667e876591d725f9aac1cac48b35e4bd561",
    "signature": "0x3dbbb45a1f120bff8deea77d06d3b62bc689daafab975eac0b421b56c4e6c1d73e3fdff9d343a34128b7026422c41311ba9ceee722118779e723fc2dbb24a4a51c",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}