{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x82f30b9edd4a376b6309bfc205f048c809a5c33d3770715d82b7aefa6284f66a",
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    "signer": "0xB9eed62bBE341044AB03f1DDF57b967A6abAcD35",
    "userId": "18054566"
  }
}