{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "714565597",
    "entityType": "User",
    "nonce": "0x4cb2009d3da96d6f7b88e3665d8dbb65f09c738bc6eab3bc8924ff2aa1ceaca0",
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    "signer": "0xC77FC375F0505f98061bDD371Ad3b99D16525d71",
    "userId": "187154748"
  }
}