{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1910",
    "entityType": "User",
    "nonce": "0x3aa622b280281731d82c2eee6c78e23651890b08798e69d223d4f7ba044e63b3",
    "signature": "0xbb0120e16a1d06ef8f1749f89f6a0df732b05fea90c24b0bd6c0e668856f6ee947504902a8598a8c0c08bb8d1ea6cbb7d33b412c29ab0e293f95fd0e9c2548c41b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}