{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307894",
    "entityType": "User",
    "nonce": "0xa1e0cecfeed4f2f9f708e5083705ddceff645de7c7f46785b4c6d7d3e1d09528",
    "signature": "0x6d5bed805d5e26125a0e6f986bd5ac5a026d6dfdadf8e301428a902e6375dbdd56743c2285840af0157e20cf5bb257163309f56757778ceea09308d57fbcb7001b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}