{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "349686",
    "entityType": "User",
    "nonce": "0xac4c432328bcbbf3a4fe60edfbb81d4f9de4f818881358d7130b21a1a8baeef8",
    "signature": "0xf331262d9b6cdf68256ae23bcbaf3058a430f0f633f807946c40838005e26ec935ca8a3bae39930b388b7f335565b425329a26fa4a2dbdd418b4996df55ce62b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}