{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "383331",
    "entityType": "User",
    "nonce": "0x0b78f4982d5259bbcc75fa099ed8ceb625ca724ed983c4a9b7a1ef993ec2d34e",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}