{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0c01c48f55af7c0eb53006cffb15d63da65f99bfbd64622cb57e1e38d1baba63",
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    "signer": "0xB7004cbc66E36054FD494B2ce010ED2E0456Ba73",
    "userId": "359024620"
  }
}