{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "514457426",
    "entityType": "User",
    "nonce": "0x8f037b4db056f1ac85da4ab7fae2bad8e7973cffd37d94299762e7dadd4098e6",
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    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
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}