{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "857826100",
    "entityType": "User",
    "nonce": "0xc5189cb9d129e1112a32f25136e4ea10b1ef9324b4c5896385fb48c9079e6e30",
    "signature": "0x5426f75b2f7948259aa21fb937fcbfeba7bf351b1f091b8ef947795201a77e56480d807e6633fa0e9ff74f83048dcda186bb3844ac0e09bf44b304537bab08c11b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}