{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299329461",
    "entityType": "User",
    "nonce": "0xfb8144c990b40c9cb399a983a8dc61df6f7869e88848564a7d3925a43d182d84",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}