{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "661600790",
    "entityType": "User",
    "nonce": "0x2e48d380720a9da54fe48faaaaed6ebabb40a40b9fb653ca3dae29094656751e",
    "signature": "0xcad8eaa60de3854f17cbb889f9ff56019bdebfbd69ff13e66d2d00588be104be77c3b61c17928323339826fc7fc06ebc7556bf0dfc6afabf88bd478581ece2ab1c",
    "signer": "0x7Af0d0d97985806E7A9598d7347Ebaa678C4F349",
    "userId": "182701693"
  }
}