{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf544e1dc3991347b98a17212e392569120eaf24b630e734224402dc6469b9f68",
    "signature": "0xe96f48010ac96b5329404faf0a44538a195fea684abbadd515b9c2cba79a92dd49084f7bc9f41714792f0ccd4c95a0c4cde5fcb75c8564da678eee768a21c8291c",
    "signer": "0xEa3c4c3b943D1190bd6171A35bB67A56C4Bf4d76",
    "userId": "706591751"
  }
}