{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "37737",
    "entityType": "User",
    "nonce": "0x9ae0c643e16fd847dab4a2fe3e8627e008080ba9c93ec838bf9d994b5ad39c19",
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    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}