{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "938519346",
    "entityType": "User",
    "nonce": "0xa49c01b559dca0f1ddeea44ac98fe21faa950def62f6383e5e858d6457ac3439",
    "signature": "0x0768b2e050adb9d6c38bcc3a8b38453f6ed01cbcedf90d10a5e160641788945f1a8d32274b6c7885070c2af6a6849c158b034e6a5f19f6b003e7a2a7173d77451c",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}