{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "624019259",
    "entityType": "User",
    "nonce": "0x940377eb54ae4c1b1755d185ff3a98461696769df1db366e4feab95309bab28d",
    "signature": "0xf5747470045ba838fb4b4e0380836392be78b3f344d0b8a779c997644507594704a53eb133e1f334a86da296eabeb2671204f9e18f31a80289b300646f8014c41b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}