{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "571586821",
    "entityType": "User",
    "nonce": "0xf012b7ad47e5eba2efd6d7d3bf94a652c065b8e51ed64b9adf4debe2c7d96668",
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    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
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}