{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2d986e8499fa9a86f923b746911b1d6d63deb81e6b538de6c3077d8a8435e9d8",
    "signature": "0x64e72d81e484e03c4dc034dd1c8a3fc921c6ce04da39f1256e416c0da1ae40be738c14c3a42fdfaab59c7269f3ac289f90e75217fc39bfc8bd3ea2dc58a7a1321c",
    "signer": "0x4BE416743D8dDBA824e6b8e70637ED0e79Ad6dE7",
    "userId": "295248627"
  }
}