{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x03f8e494ea592985612937be9be0193a69322eb7207047745d7c0fe99786a421",
    "signature": "0xa2bf4a74a73b4829861946edc9055d6914df1ebef76d6cf9fd0b1384979043785c24f473e41ae7e9a906ade1526b0ff8524f3b39fa4106ca53386bac5de7a9031b",
    "signer": "0xad12A53B30a86D04715B5663c5832Df6E2Cb9710",
    "userId": "980941"
  }
}