{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "136781",
    "entityType": "User",
    "nonce": "0x1c6099f2fc333545540d9f29be305748ae2f05c4b58ab38288b4a216a93b91a9",
    "signature": "0x4b1a24670f99a2a4a2e31c9344db61326ff5bc0ad51edcbd9d997e8dbf08b8b769368ff962df4982125eda0dab262364150b6bde3558c5500635011a8e8181991b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}