{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "709106804",
    "entityType": "User",
    "nonce": "0x08fe89507d5cd1c4b29c780b198a8f2c83760640767c390a979f2aef0975f305",
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    "signer": "0xB2105f4c1A045E39D35b24CdcEeA28B4971bdBfd",
    "userId": "819035233"
  }
}