{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329177",
    "entityType": "User",
    "nonce": "0x5350d6880e5ba7b69d513a91b23c2649529b405e6cdef4a9420bd717aa4e11d0",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
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}