{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "67560",
    "entityType": "User",
    "nonce": "0x83e75923540186de602eba5ccf9693d25030be1d97bb322e5dbf294f2e4c714c",
    "signature": "0xdecbcd01f4d9000dc320ffc2c6642537ce48fa2e286356c346db3dfd875c66307946a0b3301b0173884220a1b0a775ac6e442052497532a11c01d2427813b2f71b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}