{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0f8e1c6fc7c43a52255abdeba7b60ce4f2f048e911b99d23621e101246e753b6",
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    "signer": "0xC8399526b0108bD1E04DB6Af28bc8Ed91D70F9db",
    "userId": "703443205"
  }
}