{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0xbfbd741f509b2d778fc543f404f5a605a1a22a352074d8cd05a400a3116060c8",
    "signature": "0x7df6432054e04e872d7a19dc24eaa52c4d2b1d1b8657482b4801450b25d4d502425ce2336b8c9e06f4eef9945a2827c803115e0640f55338676844aeac940f9c1b",
    "signer": "0x00cf0168F42053036842AaB1eF749F0183ccEa03",
    "userId": "183427799"
  }
}