{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1907896",
    "entityType": "User",
    "nonce": "0xc17f212f7a5e5ac76afc1eb71c9e9263d4c5a3dd24e2ef39d8e6c292376bba6e",
    "signature": "0x886f1698f4a6a749fb45b0e24cd7a8d6138eb793e2647634a6d0cadb48b59ae948ed4b03a02146621c03a9b08f04d120f6d08864b6376de558566f30a4d1b0561c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}