{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "337206",
    "entityType": "User",
    "nonce": "0xb031d1d3da6c65b82b785c3a6bdcf7fc76dc2194c7c804345b36138a270d6f80",
    "signature": "0x3347c8ad1b6eb18944e02158b0dcb38ce2ac8d3a60b440f0b9a50744b6230d8337bd07e3ed5aa471d5cfc9bd403b1169329974467410622e9758c2f95cb4d0ab1b",
    "signer": "0x5f002eD639b9263aAEdEE0aB936DE9F51c764878",
    "userId": "131017"
  }
}