{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x43f150a89ca1fce2cc8312b30a51bc27807d625752e71969c2c76393cac23103",
    "signature": "0x5f17b6ead8c47cc4a9886436c611246f271919dead68d0b2dce8fefc3c5848451aed3fa61bdb30ffd401b54d0297a5344388f8b39d1e72ff7dbd24cf142b27c81c",
    "signer": "0x21598D137E78d9Ef3073bfE80E71B8d5DD794B3D",
    "userId": "954784626"
  }
}