{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x44e3bdaf40bfe8569de35fc2be49b3f1beb90f088cf54454a77475d982af06dd",
    "signature": "0x2b6af1c863d639646a8aa1ce0e071c862c4dd67d61b2a913fee77504fc18207b1fdcfad191d3bb51b3ce2c953cd184888a1ac20349cde0135e42d717a9eaf5101b",
    "signer": "0x83D4c5b0035Eb6BBF319Db952dae03e49635aBa2",
    "userId": "144702338"
  }
}