{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "701016439",
    "entityType": "User",
    "nonce": "0x03b8296957413f36029cc29cd5abf1197b5e590f345de5a2488cb9cac7e1cae6",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}