{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "957751724",
    "entityType": "User",
    "nonce": "0x703684b9c1caf6b54e6f2a64bbb4d673d281275b2422a8d79bb0b901001af305",
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    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}