{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb0ebff414bfd7b4c360a88d3dd8864978055bece8494b1b2287d81b524681447",
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    "signer": "0xB51d412C536ef4608D41CA19Cd5842384cc25d88",
    "userId": "404745653"
  }
}