{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343",
    "entityType": "User",
    "nonce": "0xcf556484f63ab5ead195020be6a79c6330199bbd63e489973088795a8ea49b04",
    "signature": "0xebf17b2f3aec66f50a1a726b6c22512fba625c43260a39826ea540cb9fae5a4f6b65f1873b555fb4cc8ac30f9848052ff4d2dc99f7f8a37a0feca094d810b1281c",
    "signer": "0xF4D35113bf653395d3a48c106C53522928Ffbd1d",
    "userId": "159182864"
  }
}