{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103994",
    "entityType": "User",
    "nonce": "0x5b3f537f01ded2039700bee878382dfefffdf5798a3bc948630663ec293b1f3d",
    "signature": "0x3241d3b5bfc4cef324ce534790fae636698578988c541d0c585f25dcabc78c4d39e4d460d0a282c2502d9d054ef04a466e09ab45ffc81174dcc12df2c492d5431c",
    "signer": "0xb90dea25446900B58b936FB95262D7557e6115B7",
    "userId": "559908939"
  }
}