{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "191921",
    "entityType": "User",
    "nonce": "0xa410f9dec1f425ac9b846a9a6a38042511db6a73ad858bed3c138af3ad0993ee",
    "signature": "0x2035cb1aefb3f07eede9a91573323d5d8501972bc8fd540b7f26554bde024fb924f33b5bd10ea20e4488f76581ecf644183b2426613433abfca95020019d89181c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}