{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "447081832",
    "entityType": "User",
    "nonce": "0x74fa2dbb184a2d7a9a42f5d1392372edd69e66efbcd549235e6b7b758ec678e6",
    "signature": "0x9f4389363d1daeb9cf78a8ce316a1225ace96550c3becced49ec81e9f05f28fa0b0e9d20f6a7886d116aafe586ffa06820467bb85d526290cc4805189f5f31291b",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}