{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "584616263",
    "entityType": "User",
    "nonce": "0xfb8ae76cb1bded4d2d864e6f70c3fdd5f37fcf9633e7291fbaaa72150758be0f",
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    "signer": "0x3A7B18513E18Bc08Fee68E3290BDFB9428d3DB4C",
    "userId": "681762040"
  }
}