{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x717b59babf26da70024b7a76995cdcb1d77973ff46c37dd1ccc0c5fffc23a3e5",
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    "signer": "0xB87363868ADc2FCA384c70383a31FA81f6034594",
    "userId": "154012466"
  }
}