{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "704344",
    "entityType": "User",
    "nonce": "0xc55b28df20f992e5f68f9e65ff18ee71befbddc3535bdc46efb46b85fbb5061e",
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    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
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}