{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xac1739371616e218ce605922971fae6f9e4fe7b01bc4662ca0fa964c8f0f2ac3",
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    "signer": "0xD39864800E11DBC0263f36faa0767444974a3eC9",
    "userId": "392144053"
  }
}