{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "957873025",
    "entityType": "User",
    "nonce": "0xf5e7704cb34c7eb960ccde31b65bccfc2a6060796c47f403245fa551ab850077",
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    "signer": "0xB6977e46032867474008Cd2f452F2c7a140Ab305",
    "userId": "106614376"
  }
}