{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xca215f81562d709f6cc5229d78ee173f26f6b4ae14e7553803cdab0843d96e03",
    "signature": "0xcc1dc7cc0f49f6ec9b8df13f0f6857b8176e1aff2b1fa58522d5bbf83f76d0cc319e3eb5694560fc4436ce2ecadfc0a3c9d83d354c7ae55481bf3e462e25e5751b",
    "signer": "0xad12A53B30a86D04715B5663c5832Df6E2Cb9710",
    "userId": "980941"
  }
}