{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "349764208",
    "entityType": "User",
    "nonce": "0x5bddc7f0f580699aac818ea99d186d463667cc61b410984c0cbaadf4a21b7cca",
    "signature": "0xab384f5c289e5bb6d5f7a5556bc56512902de599e46eeaaf9130450d7ac1be1e2f3b75b80d35576e89d81f0041b15b4281af74304ba7744200679647ee45cf5a1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}