{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "258655155",
    "entityType": "User",
    "nonce": "0x8aafbdbacb2d16260955a7d2adc2e99a8cc1e14794391efb829c68efe8e139a9",
    "signature": "0x4b41d398e765df81a8f64bd42144db5479bb57c0897513429ad923d130a38907662a2f9e4c4e04285acdb6db7416ec58e2b2983f6739e1ea0ba2fb7244af55c01b",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}