{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "318437",
    "entityType": "User",
    "nonce": "0x819666c8af6afee9fe88e7d6649e34c32aa748c94e690075d58f15cd589d3ccc",
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    "signer": "0xD471164adA121A85a72a357f51C55A54cbcBb458",
    "userId": "155792"
  }
}