{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "534228710",
    "entityType": "User",
    "nonce": "0xe952c9568e01fa4449ba6ba22a27795472324f53ec897a1e2e2b8a59f2d6a6ef",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}