{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "327716",
    "entityType": "User",
    "nonce": "0x879ca0f83803a5c1df45ddd714677b9016ef7830fcb9e3732b23350c3a5e93d5",
    "signature": "0x95530cdb4745e16316815677134334f2f176207ef4587d75b9bc5278d69d53d14584e1752da9e930a7f37fbf84511488206a52d81fb733f50b7f6679d6bf79ba1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}