{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "831117417",
    "entityType": "User",
    "nonce": "0x2e4d0a005b1d8ac8fb4a811e938ee10b482f6be13d14d9ecf8690f740ce75c2b",
    "signature": "0x7f69e9bcf7f0cafdb42eae97d94732c963641e807f50a14114f553dcf43eee426987d2e8270f77e5c1cb36529e6afff474735328857c626e863f7b011a986ccc1c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}