{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "151027",
    "entityType": "User",
    "nonce": "0x57bfb83f2c962c06ae9b04b0cd6a31315db1e0352d10fa8d89395720d5077b4c",
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    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}