{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144628",
    "entityType": "User",
    "nonce": "0xa61f8caccf220a1d0e61d477decc6aec26eba9448026abecd67cb75246384e2b",
    "signature": "0x0337d9719e2defe2e086146c0df5f3c1614ad03613bb356f611e6c0b9c8fca6b1f555d29ea13304e92b6470e0b90da297d3b4a93f39d8f4e3f053b67f17e121f1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}