{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "987974477",
    "entityType": "User",
    "nonce": "0xc57b7d803b9d0c26a9371521be2669e3db17cee0065f75fb348080229e7ae850",
    "signature": "0xec6c3b6f63ad2b9218efdbeabe87b21cbf309f878b611805a03251f7b67bb5fb3e2c46cc85bdde9de235c852683e7e7b4183e60afdfac1d5a5bf0376bc1e65fc1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}