{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "531251026",
    "entityType": "User",
    "nonce": "0x8101af78b51c94e0bd48c42b4b69bef3dec8335d1f3c2b0c0e474d46f73f8446",
    "signature": "0xb876588936d0dc183e42603dba4ce580be6b49614fb27cbf61d53ecb0664747130e96e17b8fb4ef4cbff62d53c8abec459ae22eb23c1efe65acf2c2e4fde95931b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}