{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "120120",
    "entityType": "User",
    "nonce": "0xfefd302738f12005b5b744bee5b7e03b5614b38d3dbfa1644c2750fc34f83847",
    "signature": "0x03ba73d002e19c12e1ddbfde12c220243e26eee58076e34f507aed72bd1bfddd3cf7a6dc1f91a707f7b1bbc24f03b5d5f240089ddcf6c6f88ccdae0e6f7ca1ba1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}