{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "629530515",
    "entityType": "User",
    "nonce": "0x1283b013d5071fd1560babfbf39a788e1365565cbde1c4a9e87e10ba5573cd7f",
    "signature": "0x6bec6164ea8c45531f55fa0497d8c49cdbb2050154dc9ecb5f4bf45f3b5789466e905a5a99758aca7384d89f949e30eb819f0a52ef4310e53bd4f2823ee7e99a1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}