{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13589021",
    "entityType": "User",
    "nonce": "0xef8d48fb54beccaf1447de88281437b58991e67ebcaa9e57dce94a4f05032385",
    "signature": "0xb3412eb1535e06cd58754281443934453aac1cc18c33edb4e1d67555346df7f47f5061b2c798bb952a16ab7cf817cb7e455b23bdfc627f98f3a6e17a5f9a9a821c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}