{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304091",
    "entityType": "User",
    "nonce": "0xe7c0634ffc2204e4a8197603ee5302fff126ae45629f04af93bcd0c8fe401f08",
    "signature": "0xa9f1a3b335fc082192468c66ebd32973e987ad2284bd4319a6d998d28e4626a17134f40cdfe76d874076c9ed5136e3da3ff108aa7539c2277e61b2f743d289bd1c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}