{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "818311930",
    "entityType": "User",
    "nonce": "0x9d948bdaf3166eb2b4b7bac982bbe57bf26b78f2ac062ea4f3aaf724525915e8",
    "signature": "0x39a2f3b21471281e8132b06e8e63cdde073e17b26230d90ccab433416019bd705c5c0542c58f5879e2e67e86374bfb95c9d19ea0487ccd996d1bc6bc4018c4fc1b",
    "signer": "0x2A4F31F94C0781556ccB9f9cd9d8e671dC69371e",
    "userId": "362070326"
  }
}