{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1010942",
    "entityType": "User",
    "nonce": "0x69a90c46d463f63ac3b9590480a6a78ead19330116281971ce0d7670ffce6777",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}