{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51978829",
    "entityType": "User",
    "nonce": "0x41d25df85f82b734417b729787eee63f710ed2b02d26f07c523e317d65f7e757",
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    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}