{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1584941",
    "entityType": "User",
    "nonce": "0x52dfc25c9ab795879bb69d53af01a41c8308ee3b8c7e42e3098a30728765c5dc",
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    "signer": "0xc876F505cb8a680D38792C141903C53780bc3901",
    "userId": "384345140"
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}