{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "951644728",
    "entityType": "User",
    "nonce": "0x61734b787f002cc3e7e322a872e571ed7bba0b6b47821468fb95418a51d5bf67",
    "signature": "0x6af7f84c1f5bfeab0ea22ebcb1bf7f0f62540031a029ee17e0da05b02bfc5f5d5f15b9edaa3ed9352b261d9642351623b6cbd30d3b0476a8de538947949105211b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}