{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc9ce18cb0ef5e2ca179c94952088e6f9147b2e7026091efc1d3c3d9ed8dad9b1",
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    "signer": "0xB0cCb7cc48b50141620Bc275286fcFb267B393a9",
    "userId": "878527718"
  }
}