{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf995600e38161d1d233cbbf52b2489e62eb265786bef8b20c3d4f1b97d2a3c87",
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    "signer": "0xfB916D1E787463C1799c8F986F0e19A875A71485",
    "userId": "173866575"
  }
}