{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1088310",
    "entityType": "User",
    "nonce": "0x73c15218c91d3123d6608f03ba3777af943c5724fb8008157a9690845884b97b",
    "signature": "0xef968b45613958eac8a29bf8ec2b3016528b7e2bcd5ecbfc189e9fcc0ea52daf553e3076a5f4f67258c78370e8884e1e9bc645bb9adfda573802f577133914981c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}