{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299555",
    "entityType": "User",
    "nonce": "0xf9ab5c0ea8ceff446cf1f357d44c2c14c0e16d0988913de39ecb1c00a0e04e22",
    "signature": "0x237ea1974112f2e4e488d160bd05eaebe9095c129c66be27e730242c902582ac03e9de4dca6222508742dab8f60c959f8a92069253551e90c83943d7dbf8f8d11b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}