{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "780083254",
    "entityType": "User",
    "nonce": "0x2e541af4a019793cd9aed7dc3da71551f0566069a97227bf7652b79a00b23321",
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    "signer": "0xD421e37d15105099410eABCBa242D0Ab3E985ab4",
    "userId": "807549804"
  }
}