{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3660",
    "entityType": "User",
    "nonce": "0xd776f2829480797be92d7568ce81c99f478fc221f8c9496b0a3678d2332e94e1",
    "signature": "0xb9b803620dd0c1cc7405be8c8d77c58b49dfd341cacfdca44cb4e077e8c1dcb46dc060705a2262482eae83fd66ae38b5e61e58d5b4983aeaa6196578b783e7901c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}