{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137102",
    "entityType": "User",
    "nonce": "0x221be7b2acf8101796b4944ac90a5bc4b4621fd9bd36c694a2169e2363663511",
    "signature": "0x6265efa4895a98d09d3f7630eb40423519f4d74dcc7fd750231691ccd7d361fd182bd57590827046a8a34bcfbe88e7f755552a12f4c1565f94c04fab50ed545c1c",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}