{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50539",
    "entityType": "User",
    "nonce": "0xb647cde6fcf87f22c61b990839c73b267179802ba3a0037ea6a6e4000bd3a483",
    "signature": "0x58f28bd41b355b51c63cf4d03352d158555714a6426fd6ed54c2178cd878df5613c39af463874e49a8f85186ac58389489bf064514d7ab9a9748c3760cae75331c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}