{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1598664",
    "entityType": "User",
    "nonce": "0x5ece2579f16b3b1faf9b2d8172f52782a05e864a9174dc269b2b96b4dd0ac00d",
    "signature": "0x2a5e16b043583ccffb02f4fe2c51ec7f8d5c08ef3a72e0207091945220e5e4f73eb967d60cad61b4d858bbddc0bd630736aa2f7205df60d6bf91d4e24caa7d9b1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}