{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "41951",
    "entityType": "User",
    "nonce": "0x9813142ae867addc192eb924588281d65d87848a94ffe94258ac3232b655102c",
    "signature": "0x977e62e3137a4102e48f59c9e9ff1635099ba9b88ee23e991695425287c2f02842cadd956fe56a8909a1f247f96a4cd58250164b083b8d7ae27341b4c271ddfb1c",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}