{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138533",
    "entityType": "User",
    "nonce": "0xb4831380a0e4e7d0d3f08179fe51a05c740339e11958cf2e9426aeb9b2f06ed7",
    "signature": "0xc27fbea59679b46d4ab05e9c6948d8491d21ad67e7df0b3ebfbcc1cb84250b143d3b02a7b54c8eb346e142eaece5407711a5bed9e08b172d01b92afb03abe6321b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}